1. Department of Kinesiology and Community Health, University of Illinois, Urbana-Champaign, 123 Huff Hall, 1206 South Fourth Street Champaign, IL 61820, USA
2. Department of Biobehavioral Health, The Pennsylvania State University, 219 Biobehavioral Health Building, University Park, PA 16802, USA
3. Department of Family Medicine, Lagos State University Teaching Hospital, Lagos 100001, Nigeria