Olorunshola, KV, and L Audu. “ABO (H) Secretor Status of Sickle Cell Disease Patients in Zaria, Kaduna State, Nigeria”. Nigerian Journal of Physiological Sciences 28, no. 1 (October 10, 2013): 29–34. Accessed September 10, 2026. https://www.ajol.info/index.php/njps/article/view/95098.