[1] Boston Univ, Sch Med, Dept Dermatol, Boston, MA 02118 USA
[2] Harvard Univ, Sch Publ Hlth, Dept Soc Human Dev & Hlth, Cambridge, MA 02138 USA
[3] Dana Farber Canc Inst, Ctr Community Based Res, Boston, MA 02115 USA
[4] Boston Univ, Sch Publ Hlth, Dept Epidemiol, Boston, MA USA
[5] Massachusetts Dept Publ Hlth, Hlth Survey Program, Boston, MA USA
[6] Harvard Univ, Sch Publ Hlth, Div Publ Hlth Practice, Boston, MA 02115 USA
[7] Boston Univ, Sch Publ Hlth, Dept Biostat, Boston, MA USA
[8] Harvard Univ, Sch Med, Dept Med, Boston, MA USA
[9] Massachusetts Gen Hosp, Dept Dermatol, Boston, MA 02114 USA
[10] Harvard Univ, Sch Publ Hlth, Dept Clin Clin Epidemiol, Boston, MA 02115 USA
[11] Harvard Univ, Sch Med, Dept Dermatol, Boston, MA 02115 USA