[1] N Carolina Div Publ Hlth, Raleigh, NC 27699 USA
[2] Duke Univ, Duke Global Hlth Inst, Durham, NC USA
[3] American Univ, Ctr Hlth, Washington, DC 20016 USA
[4] American Univ, Ctr Risk, Washington, DC 20016 USA
[5] American Univ, Ctr Soc, Washington, DC 20016 USA
[6] American Univ, Dept Sociol, Washington, DC 20016 USA
[7] George Washington Univ, Dept Prevent & Community Hlth, Washington, DC USA
[8] SUNY Stony Brook, Stony Brook, NY 11794 USA