[1] Texas A&M Health Science Center,Department of Social and Behavioral Health, School of Rural Public Health
[2] The University of Georgia,Department of Health Promotion and Behavior, College of Public Health
[3] Texas A&M Health Science Center,Department of Social and Behavioral Health, School of Rural Public Health
[4] Texas A&M Health Science Center,Department of Environmental and Occupational Health, School of Rural Public Health
[5] The University of Texas Pan American,Department of Mathematics
[6] Texas A&M Health Science Center,Department of Health Policy and Management, School of Rural Public Health