Enes, P. V., P. Brandão, P. Ramôa, and A. Torgal. “Imperforate Hymen: The Importance of Early Diagnosis”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 6, no. 6, May 2017, pp. 2628-30, doi:10.18203/2320-1770.ijrcog20172367.