Ayo Adebowale    Department of Epidemiology and Medical Statistics, Faculty of Public Health, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria           adehamilt2008@yahoo.com

Tosin Oni       Department of Demography and Social Statistics, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria tosinooni@gmail.com    

Akanni Akinyemi   Department of Centre for Research, Evaluation Resources and Development (CRERD), Ile-Ife, Osun State, Nigeria   akakanni2@gmail.com