Onyiriuka, AN, and EM Ikeanyi. “Sex Ratio at Birth: A Retrospective Audit of the Birth Records of a Nigerian Hospital”. Nepal Journal of Obstetrics and Gynaecology 10, no. 1 (August 17, 2015): 85–88. Accessed April 18, 2024. https://www.nepjol.info/index.php/NJOG/article/view/13205.