Dhama, V., K. Kumari, R. Chaudhary, and S. Singh. “Role of Endometrial Thickness in Natural and Stimulated Cycles in Infertility”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 9, no. 7, June 2020, pp. 2872-7, doi:10.18203/2320-1770.ijrcog20202724.