Umoh, V., A. Otu, O. Enang, Q. Okereke, O. Essien, and I. Ukpe. “The Pattern of Diabetic Admissions in UCTH Calabar, South Eastern Nigeria: A Five Year Review”. The Nigerian Health Journal, vol. 12, no. 1, Sept. 2012, pp. 7-11, https://www.ajol.info/index.php/nhj/article/view/81242.