Published on in Vol 7 , No 6 (2018) :June

1 Department of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Dallas, TX, US
2 Department of Family and Preventive Medicine, The University of Oklahoma Health Sciences Center and Stephenson Cancer Center, Oklahoma City, OK, US
3 Department of Behavioral Science, College of Medicine, University of Kentucky, Lexington, KY, US
4 Metrocare Services and Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, US
5 Department of Biostatistics, School of Public Health, University of Texas, Houston, TX, US
*these authors contributed equally