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