Airao, B.B., Savalia, P.J. and Chaudhary, R.V. 2018. Clomiphene citrate alone versus combined metformin and clomiphene citrate versus combined metformin and clomiphene citrate and drilling versus metformin alone in infertile Indian women with PCOS: a prospective cross-sectional study. International Journal of Reproduction, Contraception, Obstetrics and Gynecology. 7, 4 (Mar. 2018), 1527–1531. DOI:https://doi.org/10.18203/2320-1770.ijrcog20181349.