[1] Univ North Texas Hlth Sci Ctr, Dept Hlth Behav & Hlth Syst, Ft Worth, TX USA
[2] Univ North Texas Hlth Sci Ctr, Sch Publ Hlth, Dept Biostat & Epidemiol, Ft Worth, TX USA
[3] Univ Cent Florida, Dept Populat Hlth, Coll Med, Orlando, FL USA
[4] Univ North Texas Hlth Sci Ctr, Sch Publ Hlth, Dept Hlth Behav & Hlth Syst, 3500 Camp Bowie Blvd, Ft Worth, TX 76107 USA