A. Bakr-ibn-badr and M. M. Hakimi, Traducteur)-Hippologie et médecine du cheval en Terre d'Islam au XIVe siècle-Le traité des deux arts en médecine vétérinaire dit le Nâceri-Errance éditions, 2006.

A. Hashim, H. Ombar, and O. , Abd Elaal I-Intrauterine insemination versus timed intercourse with clomiphene citrate in polycystic ovary syndrome: a randomized controlled trial-Acta Obstet Gynecol Scand, pp.2011-90344

. Agence-de-biomédecine, Activité d'assistance médicale à la procréation de 2011-Le rapport médical et scientifique de l'assistance médicale à la procréation et de la génétique humaine

M. Agha-hosseini, M. Rahmani, A. Alleyassin, and L. Safdarian, Sarvi F-The effect of progesterone supplementation on pregnancy rates in controlled ovarian stimulation and intrauterine insemination cycles: a randomized prospective trial, Eur J Obstet Gynecol Reprod Biol, issue.2, pp.2012-165249

J. Almeida, S. Pinelo, H. Serra, A. Barbosa, E. Felgueira et al., Tavares A-Controlled ovarian stimulation and intrauterine insemination: an actual therapy?-Rev Bras Ginecol Obstet, pp.2011-33341

E. Anonyme-rotterdam, ASRM-Sponsored PCOS Consensus Workshop Group-Revised 2003 consensus on diagnostic criteria and long-term health risks related to polycystic ovary syndrome-Fertil Steril, pp.19-25, 2004.

M. Ashrafi, M. Rashidi, A. Ghasemi, A. Arabipoor, S. Daghighi et al., Zolfaghari Z-The role of infertility etiology in success rate of intrauterine insemination cycles: an evaluation of predictive factors for pregnancy rate, Int J Fertil Steril, issue.2, pp.2013-7100

Y. Aydin, H. Hassa, and T. Oge, Tokgoz VY-Factors predictive of clinical pregnancy in the first intrauterine insemination cycle of 306 couples with favourable female patient characteristics-Hum Fertil (Camb), pp.2013-16286

B. Delgadillo, J. , R. Ruiz, J. , M. Munguia et al., factors of pregnancy in intrauterine insemination-Ginecol Obstet Mex, pp.2006-74611

J. Beck, C. Boothroyd, M. Proctor, C. Farquhar, and E. Hughes, Oral anti-oestrogens and medical adjuncts for subfertility associated with anovulation-Cochrane database syst rev, p.2249, 2005.

J. Bellaisch-allart, Induction de l'ovulation hors FIV-26 ème journée nationale du CNGOF, Paris 2002-Extrait des mises à jour en gynécologie et obstétrique-Tome XXVI publié le 28, 2002.

L. Benardi and M. Pavone, Endometriosis: an update on management-Womens health (Lond, pp.2013-9233

C. Bergh, C. Howles, K. Borg, L. Hamberger, B. Josefsson et al., Recombinant human follicle stimulating hormone (r-hFSH; Gonal-F) versus highly purified urinary FSH (Metrodin HP): results of a randomized comparative study in women undergoing assisted reproductive techniques, Human Reproduction, vol.12, issue.10, pp.122133-122142, 1997.
DOI : 10.1093/humrep/12.10.2133

B. Blanc and L. Bouli, Test de Hühner-Gynécologie-Edition Pradel, 1997.

B. Blondel and M. Kaminski, Trends in the occurrence, determinants, and consequences of multiple births-Semin Perinatol, Review, issue.4, pp.2002-26239

V. Boulard, B. Charbit, F. Brasseur, E. Loudel, and H. Copin, Merviel P-Prognostic factors of pregnancy in intra-uterine insemination with sperm of donor: a review of 535 cycles over 7 years, J Gynecol Obstet Biol Reprd, issue.1, pp.2013-4240

J. Brown, Pituitary control of ovarian function -Concepts derived from gonadotrophin therapy- Aust N Z J Obstet Gynaec, pp.47-54, 1978.

H. Bry-gauillard and S. Coulondre, Cédrin-Durnerin I, Hugues JN-Bénéfices et risques de la stimulation ovarienne avant insémination intra-utérine-Gynecol Obstet Fertil, pp.82-113, 2000.

C. Bulletti, D. Ziegler, D. Polli, V. , D. Ferro et al., Characteristics of uterine contractility during menses in women with mild to moderate endometriosis-Fertil Steril, pp.1156-1161, 2002.

A. Cantineau, B. Cohlen, and M. Heineman, Ovarian stimulation protocols (anti-oestrogens, gonadotrophins with and without GnRH agonists/antagonists) for intrauterine insemination (IUI) in women with subfertility-Cochrane Database Syst Rev, pp.2007-2025

A. Cantineau, B. Cohlen, H. Klip, and M. Heineman, The addition of GnRH antagonists in intrauterine insemination cycles with mild ovarian hyperstimulation does not increase live birth rates-a randomized, double-blinded, placebo-controlled trial-Hum Reprod, pp.2011-261104

A. Cantineau and M. Janssen, Cohlen BJ-Synchronised approach for intrauterine insemination in subfertile couples-Cochrane Database Syst Rev, pp.2010-2024

I. Cédrin-durnerin, H. Bry, S. Coulondre, and J. Hugues, N-Induction d'ovulation mono pauci ou plurifolliculaire-Service de Médecine de la Reproduction Hôpital Jean Verdier, 2000.

J. Check, J. Liss, and A. Bollendorf, Intrauterine insemination (IUI) does not improve pregnancy rates in infertile couples where semen parameters are normal and postcoital tests are adequate-Clin Exp Obstet Gynecol, pp.2013-4033

J. Check and J. Liss, The effect of diminished oocyte reserve in younger women (age < or = 37) on pregnancy rates in natural cycles-Clin Exp Obstet Gynecol, pp.2013-4027

J. Check and P. Spirito, Robert Wood Johnson Medical School at Camden, USA-Higher pregnancy rates following treatment of cervical factor with intrauterine insemination without superovulation versus intercourse: the importance of a welltimed postcoital test for infertility-Arch Androl, pp.1995-3571

S. Christin-maitre and J. Hugues, On behalf of the recombinant FSH study group. A comparative randomized multicentric study comparing the step-up versus step-down protocol in polycystic ovary syndrome-Hum Reprod, pp.1626-1657, 2003.

M. Costello, R. Department, I. Medicine, and . Australia, Australia -Systematic review of the treatment of ovulatory infertility with clomiphene citrate and intrauterine insemination, Royal Hospital for WomenAust N Z J obstet Gynaecol, issue.2, pp.2004-4493

S. Daya, Efficacy of progesterone support in the luteal phase following in-vitro fertilization and embryo transfer: meta-analysis of clinical trials, Human Reproduction, vol.3, issue.6, pp.1988-3731
DOI : 10.1093/oxfordjournals.humrep.a136774

J. Deaton, R. Clark, D. Pittaway, and P. Herbst, Bauguess P-Clomiphene citrate ovulation induction in combination with a timed intrauterine insemination: the value of urinary luteinizing hormone versus human chorionic gonadotropin timing-Fertil Steril, pp.6843-6850, 1997.

L. Dinelli, B. Courbière, V. Achard, E. Jouve, C. Deveze et al., Paulmyer-Lacroix O- Prognosis factors of pregnancy after intrauterine insemination with the husband's sperm: conclusions of an analysis of 2,019 cycles-Fertil Steril, pp.2014-2029

A. Erdem, M. Erdem, and S. Atmaca, Guler I-Impact of luteal phase support on pregnancy rates in intrauterine insemination cycles: a prospective randomized study-Fertil Steril, pp.2009-912508

J. Farhi, A. Ben-haroush, Y. Lande, and B. Fisch, Role of treatment with ovarian stimulation and intrauterine insemination in women with unilateral tubal occlusion diagnosed by hysterosalpingography Fertil Steril, pp.2007-88396

N. Freisleben, K. Lossl, J. Bogstad, H. Bredkjaer, B. Toft et al., The Fertility Clinic, Department 4071-Predictors of ovarian response in intrauterine insemination patients and development of a dosage nomogram-Reprod Biomed Online, pp.2008-17632

A. Friedman, M. Juneau-norcross, B. Sedensky, N. Andrews, J. Dorfman et al., Life table analysis of intrauterine insemination pregnancy rates for couples with cervical factor, male factor, and idiopathic infertility-Fertil Steril, pp.1991-551005

C. Gemzell, E. Diczfalusy, and G. Tillinger, CLINICAL EFFECT OF HUMAN PITUITARY FOLLICLE-STIMULATING HORMONE (FSH)*, The Journal of Clinical Endocrinology & Metabolism, vol.18, issue.12, 1333.
DOI : 10.1210/jcem-18-12-1333

S. Ghesquiere, E. Castelain, C. Speissens, C. Meuleman, and D. , Hooghe TM-Relationship between follicle number and (multiple) live birth rate after controlled ovarian hyperstimulation and intrauterine insemination, Am J obstet Gynecol, issue.6, pp.2007-197

I. Glatstein, C. Best, A. Palumbo, L. Sleeper, and A. Friedman, Hornstein MD-The reproductibility of the postcoital test: a prospective study-Obstet Gynecol, pp.1995-85396

C. Glazener, N. Kelly, M. Weir, J. David, J. Cornes et al., The diagnosis of male infertility-prospective time-specific study of conception rates related to seminal analysis and postcoital sperm-mucus penetration and survival in otherwise unexplained infertility-Hum Reprod, pp.1987-2665

A. Graziano, D. Caserta, I. Piva, L. Monte, G. Bordi et al., The addition of GnRH antagonists in intrauterine insemination cycles: a pilot study, Eur Rev Med Pharmacol Sci, issue.12, pp.2013-171604

C. Griffith and D. Grimes, The validity of the postcoital test, American Journal of Obstetrics and Gynecology, vol.162, issue.3, pp.615-635, 1990.
DOI : 10.1016/0002-9378(90)90969-E

D. Guzick, M. Sullivan, G. Adamson, M. Cedars, R. Falk et al., Stein Kampf M-Efficacy of treatment for unexplained infertility-Fertility sterility, pp.207-213, 1998.

D. Hamilton-fairley, D. Kiddy, H. Watson, and C. Paterson, Association of moderate obesity with a poor pregnancy outcome in women with polycystic ovary syndrome treated with low dose gonadotrophin, BJOG: An International Journal of Obstetrics and Gynaecology, vol.33, issue.2, pp.128-159, 1992.
DOI : 10.1016/0140-6736(90)92765-A

H. Hatasaka, New perspectives for unexplained infertility-Clin Obstet Gynecol, pp.2011-54727

B. Hedon, J. Hugues, J. Emperaire, J. Chabaud, D. Barbereau et al., Truong F-A comparative prospective study of a chronic low dose versus a conventional ovulation stimulation regimen using recombinant human follicle stimulating hormone in anovulatory infertile women-Human reprod, pp.1998-132688

F. Helmerhorst, H. Van-vliet, T. Gornas, M. Finken, and D. Grimes, Intrauterine insemination versus timed intercourse for cervical hostility in subfertile couples-Obstet Gynecol Surv, pp.61402-61416, 2006.

J. Herjan, C. Bennink, M. Fauser, and B. , Out HJ-Recombinant follicle-stimulating hormone (FSH; Puregon) is more efficient than urinary FSH (Metrodin) in women with clomiphene citrate-resistant, normogonadotropic, chronic anovulation: a prospective, multicenter, assessor-blind, randomized, clinical trial-Fertil Steril, pp.19-25, 1998.

R. Homburg, M. Hendriks, T. König, R. Anderson, A. Balen et al., Lambalk-Clomifene citrate or low-dose FSH for the first-line treatment of infertile women with anovulation associated with polycystic ovary syndrome: a prospective randomized multinational study-Hum Reprod, pp.2012-27468

F. Huang, S. Chang, J. Chang, F. Kung, J. Wu et al., Timed intercourse after intrauterine insemination for treatment of infertility, European Journal of Obstetrics & Gynecology and Reproductive Biology, vol.80, issue.2, pp.80-257, 1998.
DOI : 10.1016/S0301-2115(98)00114-6

J. N. Hugues, Cédrin-Durnerin I-Les protocoles « step »-Service de médecine de la Reproduction, pp.175-82, 2005.

E. Hughes, The effectiveness of ovulation induction and intrauterine insemination in the treatment of persistent infertility: a meta-analysis, Human Reproduction, vol.12, issue.9, pp.1997-121865
DOI : 10.1093/humrep/12.9.1865

Y. Jeon, J. Jung, H. Kim, S. Seo, S. Cho et al., Lee BS-Predictive factors for pregnancy during the first four intrauterine insemination cycles using gonadotropin-Gynecol Endocrinol, pp.2013-29834

R. Jondet, insémination artificielle en France: les promoteurs de la méthode-VIIème symposium international zootechnique, 1972.

M. Kamath, P. Bhave, T. Aleyamma, R. Nair, A. Chandy et al., Predictive factors for pregnancy after intrauterine insemination: A prospective study of factors affecting outcome-J Hum Reprod Sci, pp.2010-3129

M. Kamath, P. Bhave, and K. George, Effectiveness of GnRH antagonist in intrauterine insemination cycles, European Journal of Obstetrics & Gynecology and Reproductive Biology, vol.166, issue.2, pp.2013-166168
DOI : 10.1016/j.ejogrb.2012.09.023

S. Kavoussi, Impact of superovulation for women with endometriosis-Semin Reprod Med, pp.201-31150

J. Keenan and K. Moghissi, Luteal phase support with hCG does not improve fecundity rate in human menopausal gonadotropin-stimulated cycles-Obstet Gynecol, pp.1992-79983

C. Kirby, S. Flaherty, B. Godfrey, G. Warnes, C. Matthews et al., South Australia-A prospective trial of intrauterine insemination of motile spermatozoa versus timed intercourse-Fertil Steril, pp.1991-56102

E. Knobil, The GnRH pulse generator-Laboratory for Neuroendocrinology, University of Texas Health Science Center, Medical School, Houston-American journal of obstetrics and gynecology, pp.1721-1728, 1990.

I. Kosmas and E. Kolibianakis, Devroey P-Association of estradiol levels on the day of hCG administration and pregnancy achievement in IVF: a systematic review-Hum Reprod, pp.2004-192446

D. Kyrou, E. Kolibianakis, H. Fatemi, G. Grimbizis, T. Theodoridis et al., Devroey P-Spontaneous triggering of ovulation versus HCG administration in patients undergoing IUI: a prospective randomized study-Reprod Biomed Online, pp.2012-25278

N. Lédée, C. J. Ferré, and F. , Interactions endomètre-embryon au cours de l' implantation : du follicule au remodelage vasculaire de l'utérus-Inserm U782, p.75014

E. López, J. Gunby, S. Daya, J. Parrilla, and L. Abad, Balasch -Ovulation induction in women with polycystic ovary syndrome: randomized trial of clomiphene citrate versus low-dose recombinant FSH as first line therapy-J, Reprod Biomed Online, issue.94, pp.382-90, 2004.

E. Loumaye and . Iii, open, randomized, multicentre study to compare the safety and efficacity of recombinant human follicle stimulating hormone (Gonal F) administered subcutaneously with that of urinary human follicle stimulating hormone (Metrodin) given imtramuscularly, to induce ovulation in WHO group II anovulatory infertile women-Ares-serono, internal report, 1995.

B. Lunenfeld, A. Menzi, and B. Volet, Clinical effects of human post-menopausal gonadotrophin-Advance Abstracts of Short Communications, First International Congress of Endocrinology-Copenhagen, 1960.

I. Mahani and M. Afnan, The pregnancy rates with intrauterine insemination (IUI) in superovulated cycles employing different protocols (clomiphen citrate (CC), human menopausal gonadotropin (HMG) and HMG+CC) and in natural ovulatory cycle-J Pak Med Assoc, pp.2004-54503

M. Maher, Luteal phase support may improve pregnancy outcomes during intrauterine insemination cycles, European Journal of Obstetrics & Gynecology and Reproductive Biology, vol.157, issue.1, pp.2011-15757
DOI : 10.1016/j.ejogrb.2011.03.022

L. Mascarenhas, G. Khastgir, and W. Davies, Lee S-Superovulation and timed intercourse: can it provide a reasonable alternative for those unable to afford assisted conception?-Hum Reprod, pp.1994-967

R. Matorras, O. Ramón, A. Expósito, B. Corcóstegui, I. Ocerin et al., Rodríguez- Escudero FJ-Gn-RH antagonists in intrauterine insemination: the weekend-free protocol, J Assist Reprod Genet, issue.2, pp.2006-2351

P. Merviel, Réceptivité endométriale en cycle naturel et stimulé-XXIXème, 2012.

P. Merviel, M. Heraud, N. Grenier, E. Lourdel, and P. Sanguinet, Copin H-Predictive factors for pregnancy after intrauterine insemination (IUI): an analysis of 1038 cycles and a review of the literature-Fertil Steril, pp.2010-9379

P. Merviel, E. Lourdel, E. Cabry, R. Temstet, M. Brzakowski et al., Copin H-Le désir tardif d'enfant : quelle prise en charge ?-32ème journées nationales du CNGOF-Extrait des mises à jour en Gynécologie médicale, 2008.

H. Mizunuma, T. Takagi, K. Yamada, K. Andoh, Y. Ibuki et al., Ovulation induction by stepdown administration of purified urinary follicle-stimulating hormone in patients with polycystic ovarian syndrome-Fertil Steril, pp.1195-1201, 1991.

J. Nulsen, S. Walsh, S. Dumez, and D. Metzger, A randomized and longitudinal study of human menopausal gonadotropin with intrauterine insemination in the treatment of infertility-Obstet Gynecol, pp.780-786, 1993.

S. Nuojua-huttunen, C. Tomas, R. Bloiqu, and L. Tuomivaara, Martikainen H-Intrauterine insemination treatment in subfertility: an analysis of factors affecting outome-Hum Reprod, pp.14-698, 1999.

W. Ombelet, N. Dhont, A. Thijssen, E. Bosmans, and T. Kruger, Semen quality and prediction of IUI success in male subfertility: a systematic review-Reprod Biomed Online, pp.2014-28300

S. Ozkan and W. Murk, Arici A-Endometriosis and infertility: epidemiology and evidence-based treatments-Ann N Y Acad Sci, pp.92-100, 1127.

S. Plosker, W. Jacobson, and P. Amato, Predicting and optimizing success in an intra-uterine insemination programme-Hum Reprod, pp.2014-2035, 1994.

M. Rashidi, A. Aaleyasin, M. Aghahosseini, S. Loloi, A. Kokab et al., Advantages of recombinant follicle-stimulating hormone over human menopausal gonadotropin for ovarian stimulation in intrauterine insemination: a randomized clinical trial in unexplained infertility, European Journal of Obstetrics & Gynecology and Reproductive Biology, vol.169, issue.2, pp.2013-169244
DOI : 10.1016/j.ejogrb.2013.03.002

A. V. Schally and C. Bowers, Y-Purification of luteinizing hormone releasing factor from bovine hypothalamus-Endocrinology, pp.608-614, 1964.

I. Scholten, L. Moolenaar, J. Gianotten, F. Van-der-veen, P. Hompes et al., Steures P-Long term outcome in subfertile couples with isolated cervical factor -J Reprod Infertil, pp.2012-13158

P. Smith and E. Engle, Experimental evidence of the role of anterior pituitary in development and regulation of gonads-American journal of anatomy, p.159, 1927.

M. Soria, G. Pradillo, J. García, P. Ramón, A. Castillo et al., Paricio P-Pregnancy predictors after intrauterine insemination: analysis of 3012 cycles in 1201 couples-J Reprod Infertil, pp.2012-13158

I. Souter, I. Dimitriadis, L. Baltagi, J. Meeker, and J. Petrozza, Elevated day 3 follicle-stimulating hormone in younger women: is gonadotropin stimulation/intrauterine insemination a good option?, American Journal of Obstetrics and Gynecology, vol.211, issue.1, pp.2014-2016
DOI : 10.1016/j.ajog.2014.01.031

B. Speyer, B. Abramov, W. Saab, A. Doshi, U. Sarna et al., Serhal P-Factors influencing the outcome of intrauterine insemination (IUI): age, clinical variables and significant thresholds, J Obstet Gynaecol, issue.7, pp.2013-33697

P. Steures, J. Van-der-steeg, B. Mol, F. Van-der-veen, J. Habbema et al., -Prediction of an ongoing pregnancy after intrauterine insemination-Fertil Steril, pp.8245-51, 2004.

P. Steures, J. Van-der-steeg, H. Verhoeve, P. Van-dop, P. Hompes et al., Mol BW-Does ovarian hyperstimulation in intrauterine insemination for cervical factor subfertility improve pregnancy rates?-Hum Reprod, pp.2004-192263

B. Stone, J. Vargyas, G. Ringler, and A. Stein, Marrs RP-Determinants of the outcome of intrauterine insemination: analysis of outcomes of 9963 consecutive cycles, Am J Obstet Gynecol, vol.6, issue.1, pp.1999-1801522

R. Streda, T. Mardesic, V. Sobotka, D. Koryntova, and L. Hybnerova, Jindra M-Comparison of different starting gonadotropin doses (50, 75 and 100 IU daily) for ovulation induction combined with intrauterine insemination-Arch Gynecol Obstet, pp.2012-2861055

M. Tomlinson, J. Amissah-arthur, K. Thompson, and J. Kasraie, Bentick B-Prognostic indicators for intrauterine insemination: statistical model for IUI success-Hum Reprod, pp.1996-111892

I. Tummon, L. Asher, J. Martin, and T. Tulandi, Randomized controlled trial of superovulation and insemination for infertility associated with minimal or mild endometriosis-Fertil Steril, pp.8-12, 1997.

R. Tur, P. Barri, B. Coroleu, R. Buxaderas, N. Parera et al., Use of a prediction model for highorder multiple implantation after ovarian stimulation with gonadotrophins-Fertil Steril, pp.116-137, 2005.

M. Van-rumste, I. Custers, F. Van-der-veen, M. Van-wely, and J. Evers, Mol BW-The influence of the number of follicles on pregnancy rates in intrauterine insemination with ovarian stimulation: a meta-analysis-Hum Reprod Update, pp.2008-14563

E. Velde, R. Van-kooy, and J. Waterreus, Intrauterine insemination of washed husband's spermatozoa: a controlled study-Fertil Steril, pp.1989-51182

S. Veltman-verhulst, B. Cohlen, E. Hughes, and M. Heineman, Intrauterine insemination for unexplained subfertility-Cochrane Database Syst Rev Wainer B-Les risques des traitements inducteurs de l'ovulation-Médecine thérapeutique Endocrinologie et Reproduction compte rendu de la XXIVème journée annuelle du groupe lillois de recherche en médecine de la reproduction 102 al-Induction of ovulation with low-dose gonadotropins in Polycystic Ovary Syndrome: an analysis of 109 pregnancies in 225 women, White DMJ Clin Endocrinol Metab, vol.981, issue.6, pp.2012-2024, 1996.

A. Wiser, E. Shalom-paz, S. Reinblatt, H. Holzer, and T. Tulandi, Controlled ovarian hyperstimulation in women with polycystic ovarian syndrome with or without intrauterine insemination-Gynecol Endocrinol, pp.2012-28502

E. Wolff, N. Vahidi, C. Alford, K. Richter, and E. Widra, Influences on endometrial development during intrauterine insemination: clinical experience of 2,929 patients with unexplained infertility, Fertility and Sterility, vol.100, issue.1, pp.2013-100194
DOI : 10.1016/j.fertnstert.2013.03.023

Y. Xu, H. Wang, J. Qiao, P. Liu, X. Chen et al., Analysis of clinical factors affecting pregnancy rate of intrauterine insemination-Beijing Da Xue Xue Bao, pp.2013-45887

A. Yavuz, O. Demirci, and H. Sözen, Uludoan M-Predictive factors influencing pregnancy rates after intrauterine insemination-J Reprod Med, pp.2013-11227

G. Yi, B. Jee, C. Suh, and S. Kim, -Stimulated intrauterine insemination in women with unilateral tubal occlusion-Clin Exp Reprod Med, pp.2012-3968
URL : https://hal.archives-ouvertes.fr/in2p3-00025581

B. Yousefi and A. Azargon, Predictive factors of intrauterine insemination success of women with infertility over 10 years-J Pak Med Assoc, pp.2011-61165

H. Zeyneloglu, A. Arici, and D. Olive, Duleba AJ-Comparison of intrauterine insemination with timed intercourse in superovulated cycles with gonadotropins: a meta-analysis-Fertil Steril, pp.1998-69486

B. Zondek, Ueber die Funktion des Ovariums-Zeitschr Geburtsh Gynäkol, pp.1926-90
DOI : 10.1007/bf01752250

P. Zonneveld and G. Scheffer, Broekmans FJ et al-Do cycle disturbances explain the agerelated decline of female fertility? Cycle characteristics of women aged over 40 years compared with a reference population of young women-Hum Reprod, pp.495-501, 2003.