[1] Harvard TH Chan Sch Publ Hlth, Boston, MA USA
[2] East Carolina Univ, Brody Sch Med, Greenville, NC 27858 USA
[3] Brigham & Womens Hosp, Dept Dermatol, 221 Longwood Ave, Boston, MA 02115 USA
[4] Harvard Med Sch, Boston, MA 02115 USA
[5] VA Integrated Serv Network VISN 1, Dept Dermatol, Jamaica Plain, MA USA