[1] Wake Forest Sch Med, Dept Dermatol, Ctr Dermatol Res, Med Ctr Blvd, Winston Salem, NC 27157 USA
[2] Univ Autonoma Nuevo Leon, Hosp Univ Dr Jose E Gonzalez, Dept Dermatol, Monterrey, Mexico
[3] Wake Forest Sch Med, Dept Dermatol, Winston Salem, NC 27101 USA