Nandal, S., & Devi, M. G. (2026). A randomized study comparing flexible PPOS with flexible GnRH antagonist protocol in IVF outcomes. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 15(7), 2482–2486. https://doi.org/10.18203/2320-1770.ijrcog20262091