Fonseca, M., Deshmukh, P. Y., & Kharat, D. (2017). Progesterone only pills: an effective contraceptive option for lactating women. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 6(10), 4399–4401. https://doi.org/10.18203/2320-1770.ijrcog20174412