Etim, Afiong A., and Maisie H. Etukudo. “Ascorbic Acid Levels in Hepatitis and Non-Hepatitis Subjects in University of Calabar Teaching Hospital (UCTH), Calabar”. Pakistan Journal of Nutrition 5, no. 5 (August 15, 2006): 490–491. Accessed July 1, 2025. https://pjnonline.org/pjn/article/view/400.