T. A. Udofia, F. O. Jinadu, A. T. Ottun, and A. M. Olumodeji, “Clinical and sonographic features in infertile women with and without polycystic ovarian syndrome”, Int J Reprod Contracept Obstet Gynecol, vol. 10, no. 6, pp. 2437–2442, May 2021.