[1] Brigham & Womens Hosp, Dept Dermatol, Boston, MA USA
[2] Massachusetts Gen Hosp, Dept Dermatol, Boston, MA USA
[3] Dana Farber Canc Inst, Boston, MA USA
[4] Harvard Med Sch, Boston, MA USA
[5] Brigham & Womens Hosp, Dept Pathol, Boston, MA USA
[6] DFCI, Ctr Cutaneous Oncol, 375 Longwood Ave, Boston, MA 02115 USA