[1] Univ South Carolina, Arnold Sch Publ Hlth, Rural & Minor Hlth Res Ctr, Columbia, SC 29208 USA
[2] Univ South Carolina, Arnold Sch Publ Hlth, Dept Hlth Serv Policy & Management, Columbia, SC 29208 USA
[3] Univ South Carolina, Arnold Sch Publ Hlth, Dept Epidemiol & Biostat, Columbia, SC 29208 USA
[4] Drexel Univ, Dornsife Sch Publ Hlth, Dept Hlth Management & Policy, Philadelphia, PA USA