[1] Mt Sinai Sch Med, Dept Dermatol, New York, NY 10128 USA
[2] Albert Einstein Coll Med, Dept Dermatol, Bronx, NY 10467 USA
[3] Albert Einstein Coll Med, Dept Pathol, Bronx, NY 10467 USA
[4] Columbia Univ, Dept Dermatol, Coll Phys & Surg, New York, NY 10027 USA