A. S. Umar1*, A. O. Olatunji1*, A. O. Abiola1, A. Yakubu2 and M. Oche1
1Department of Community Health, College of Health Sciences, Usmanu Dan Fodiyo University, Sokoto, Sokoto State, Nigeria.
2Department of Medicine, College of Health Sciences, Usmanu Dan Fodiyo University, Sokoto, Sokoto State, Nigeria.
