[1] Univ Massachusetts, Manning Coll Nursing & Hlth Sci, Boston, MA 02125 USA
[2] Clemson Univ, Dept Publ Hlth Sci, 500 Edwards Hall,Epsilon Zeta Dr, Clemson, SC 29631 USA
[3] Tufts Univ, Sch Med, Tufts Med Ctr, Inst Clin Res & Hlth Policy Studies, Boston, MA 02111 USA
[4] Clemson Univ, Sch Nursing, Clemson, SC 29631 USA
[5] Univ Calif Los Angeles, Dept Epidemiol, Los Angeles, CA USA
[6] Prisma Hlth, Dept Internal Med, Greenville, SC USA
[7] Univ South Carolina, Sch Med Greenville, Dept Med, Columbia, SC 29208 USA
[8] Clemson Univ, Dept Psychol, Clemson, SC 29631 USA