Letrozole versus combined metformin and clomiphene citrate for ovulation induction in clomiphene-resistant women with polycystic ovary syndrome: a randomized controlled trial Hatem Abu Hashim, M.D., M.R.C.O.G., Tarek Shokeir, M.D., Ahmed Badawy, M.D., Ph.D. Fertility and Sterility Volume 94, Issue 4, Pages 1405-1409 (September 2010) DOI: 10.1016/j.fertnstert.2009.07.985 Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions
Figure 1 CONSORT statement flow diagram. Fertility and Sterility 2010 94, 1405-1409DOI: (10.1016/j.fertnstert.2009.07.985) Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions