1. Office of Energetics; Nutrition Obesity Research Center; University of Alabama at Birmingham; Birmingham AL USA
2. Department of Epidemiology; University of Alabama at Birmingham; Birmingham AL USA
3. Department of Health Behavior; University of Alabama at Birmingham; Birmingham AL USA
4. Department of Pediatrics; University of Oklahoma Health Sciences; Norman OK USA
5. Epidemiology Consult Division; U.S. Air Force School of Aerospace Medicine; Wright-Patterson Air Force Base OH USA