1. Department of Health Sciences California State University, Northridge Northridge CA USA
2. Division of General Pediatrics and Adolescent Health Department of Pediatrics University of Minnesota, Minnesota Minneapolis MN USA
3. Department of Kinesiology, Health, & Nutrition University of Texas, San Antonio San Antonio TX USA
4. Institute for Health Promotion and Disease Prevention Department of Preventive Medicine Keck School of Medicine University of Southern California Los Angeles CA USA