O. C. Ezechi, A. E. Wapmuk, A. G. Ohihoin, and I. A. Otobo Ujah, “Semen quality of male partners of infertile couples living with HIV infection”, Int J Reprod Contracept Obstet Gynecol, vol. 5, no. 5, pp. 1423–1427, Jan. 2017.