Oche, M. O.1*, Umar, A. S.1, Ibrahim, M. T. O.1 and Sabitu, K.2
1Department of Community Health, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Sokoto State, Nigeria.
2Department of Community Medicine, Faculty of Medicine, Ahmadu Bello University, Zaria, Kaduna State, Nigeria.
