[1] Columbia Univ, Coll Phys & Surg, New York, NY 10027 USA
[2] Yale Univ, Sch Med, Dept Dermatol, New Haven, CT 06510 USA
[3] Yale Univ, Sch Med, Dept Pediat, New Haven, CT 06510 USA
[4] Columbia Univ, Coll Phys & Surg, Med Ctr, Dept Dermatol, New York, NY USA
[5] Wake Forest Baptist Med Ctr, Winston Salem, NC USA