[1] Tufts Univ, Sch Med, Boston, MA 02111 USA
[2] Boston Childrens Hosp, Dermatol Program, Boston, MA 02115 USA
[3] Massachusetts Gen Hosp, Dept Dermatol, Boston, MA 02114 USA
[4] Harvard Univ, Sch Med, Boston, MA 02115 USA
[5] Duke Univ, Sch Med, Durham, NC 27710 USA
[6] Massachusetts Gen Hosp, Wellman Ctr Photomed, Boston, MA 02114 USA