[1] Kwame Nkrumah University of Science and Technology,School of Public Health, Department of Health Education and Promotion
[2] Kwame Nkrumah University of Science and Technology,School of Public Health, Department of Population, Family and Reproductive Health
[3] Kwame Nkrumah University of Science and Technology,School of Medical Sciences, Department of Surgery
[4] University of Washington,University of Washington School of Medicine, Department of Epidemiology and Surgery
[5] University of Washington,University of Washington School of Medicine, Department of Epidemiology