1. School of Community & Environmental Health, College of Health Sciences, Old Dominion University, Norfolk, VA, USA
2. Department of Epidemiology, School of Public Health, Johns Hopkins Bloomberg, Baltimore, MD, USA
3. Department of Behavioral and Social Sciences, School of Public Health, Brown University, Providence, RI, USA
4. Department of Mental Health and Behavioral Social Sciences, College of Health Sciences, School of Medicine, Moi University, Eldoret, Kenya
5. School of Arts and Social Sciences, Moi University, Eldoret, Kenya