[1] Boston Univ, Sch Med, 72 E Concord St, Boston, MA 02118 USA
[2] George Washington Univ, Sch Med & Hlth Sci, Washington, DC 20052 USA
[3] Kaiser Permanente Midatlantic Permanente Med Grp, Dept Dermatol, Rockville, MD USA
[4] Fenway Hlth, Fenway Inst, Boston, MA USA
[5] Beth Israel Deaconess Med Ctr, Dept Dermatol, Boston, MA 02215 USA