[1] Medstar Washington Hosp Ctr, Dept Dermatol, Washington, DC USA
[2] MedStar Georgetown Univ Hosp, Dept Dermatol, Washington, DC USA
[3] New York Univ Langone Med Ctr, Ronald O Perelman Dept Dermatol, New York, NY USA
[4] Georgetown Univ Hosp, MedStar Washington Hosp Ctr, Dept Dermatol, 3800 Reservoir Rd NW, Washington, DC 20007 USA