[1] University of Texas Health Science Center at Houston,School of Public Health, Center for Health Promotion and Prevention Research
[2] University of Houston,Department of Educational Psychology, College of Education
[3] The University of Texas School of Public Health,Department of Biostatistics
[4] The University of Texas School of Public Health,Division of Management, Policy, and Community Health
[5] Texas Tech University Health Sciences Center,Department of Public Health
[6] Centers for Disease Control and Prevention,Epidemiology and Applied Research Branch, Division of Cancer Prevention and Control
[7] Livestrong Foundation,undefined