Williams I, Parker R, Swanson J. Vitamin A Content of Southeastern Nigerian Vegetable Dishes, Their Consumption Pattern and Contribution to Vitamin A Requirement of Pregnant Women in Calabar Urban, Nigeria. Pak. J. Nutr. [Internet]. 2009 Jun. 15 [cited 2025 Sep. 4];8(7):1000–1004. Available from: https://pjnonline.org/pjn/article/view/935