Mukherjee, S., Sharma, S. and Chakravarty, B.N. (2010) Comparative in Polycystic Ovarian Syndrome and Unexplained Infertility—A Prospective Clinical Trial. Journal of Human Reproductive Sciences, 3, 80-84. http://dx.doi.org/10.4103/0974-1208.69341
 Ehert, P., Schertz, C.J. and Ezcurra, D. (2010) Recombinant Human Follicle-Stimulating Hormone Produces More Oocytes with a Lower Total Dose per Cycle in Assisted Reproductive Technologies Compared with Highly Purified Human Menopausal Gonadotrophin: A Meta-Analysis. Reproductive Biology and Endocrinology, 8, 112. http://dx.doi.org/10.1186/1477-7827-8-112
 Menkveld, R. (2010) Clinical Significance of the Low Normal Sperm Morphology Value as Proposed in the Fifth Edition of the WHO Laboratory Manual for the Examination and Processing of Human Semen. Asian Journal of Andrology, 12, 47-58.
 Kamath, M.S. and George, K. (2011) Letrozole or Clomiphene Citrate as First Line for Anovulatory Infertility: A Debate. Reproductive Biology and Endocrinology, 9, 86-88.
 Sarhan, A., Beydoun, H., Jones, H.W. and Bocca, S. (2011) Gonadotrophin Ovulation Induction and Enhancement Outcomes: Analysis of More Than 1400 Cycles. Reproductive BioMedicine Online, 23, 220-226. http://dx.doi.org/10.1016/j.rbmo.2011.05.002
 Mitwally, M.F., Biljan, M.M. and Casper, R.F. (2005) Pregnancy Outcome after the Use of an Aromatase Inhibitor for Ovarian Stimulation. American Journal of Obstetrics Gynecology, 192, 381-386.
 Ganesh, A., Goswami, S.K., Chattopadhyay, R., et al. (2009) Comparison of Letrozole with Continuous Gonadotropins and Clomiphene-Gonadotropin Combination for Ovulation Induction in 1387 PCOS Women after Clomiphene Citrate Failure; A Randomized Prospective Clinical Trial. Journal of Assisted Reproduction and Genetics, 26, 19-24.
 Mukherjee, S., Sharma, S. and Nath Chakravarty, B. (2012) Letrozole in a Low-Cost in Vitro Fertilization Protocol in Intracytoplasmic Sperm Injection Cycles for Male Factor Infertility: A Randomized Controlled Trial. Journal of Human Reproductive Sciences, 5, 170-174.
 Gregoriou, O., Vlahos, N.F. and Konidaris, S. (2008) Randomized Controlled trial Comparing Superovulation with Letrozole versus Recombinant Follicle-Stimulating Hormone Combined with Intrauterine Insemination for Couples with Unexplained Infertility Who Had Failed Clomiphene Citrate Stimulation and Intrauterine Insemination. Fertility and Sterility, 90, 678-683.
 HaqNawaz, F., Virk, S., Qadir, T. and Imam, S. (2013) Comparison of Letrozole and Clomiphene Citrate Efficacy along with Gonadotrophins in Controlled Ovarian Hyperstimulation for Intrauterine Insemination Cycles. Journal of Reproduction and Infertility, 14, 138-142.
 Quintero, R.B., Urban, R., Lathi, R.B. and Westphal, L.M. (2007) A Comparison of Letrozole to Gonadotropins for Ovulation Induction, in Subjects Who Failed to Conceive with Clomiphene Citrate. Fertility and Sterility, 88, 879-885. http://dx.doi.org/10.1016/j.fertnstert.2006.11.166
 Healey, S., Tan, S.L., Tulandi, T. and Biljan, M.M. (2003) Effects of Letrozole on Superovulation with Gonadotropins in Women Undergoing Intrauterine Insemination. Fertility and Sterility, 80, 1325-1329. http://dx.doi.org/10.1016/j.fertnstert.2003.03.001
 Baysoy, A., Serdaroglu, H. and Jamal, H. (2006) Letrozole versus Human Menopausal Gonadotrophin in Women Undergoing Intrauterine Insemination. Reproductive BioMedicine Online, 13, 208-212.
 Polyzos, N.P., Tzioras, S. and Badawy, A.M. (2009) Aromatase Inhibitors for Female Infertility: A Systematic Review of the Literature. Reproductive BioMedicine Online, 19, 456-471.