Mac-Inegite, J. O., O. K. Obagaiye, and Olumuyiwa A. Owolabi. 1994. “Niacin Intake of a Cross-Section of the Nigerian Populace”. The Indian Journal of Nutrition and Dietetics 31 (7):205-10. https://informaticsjournals.com/index.php/ijnd/article/view/8022.