[1] Med Univ South Carolina, Coll Grad Studies, Charleston, SC USA
[2] Med Univ South Carolina, Coll Med, 135 Rutledge Ave,11th Floor, Charleston, SC 29425 USA
[3] Med Univ South Carolina, Dept Dermatol & Dermatol Surg, Charleston, SC USA
[4] Med Univ South Carolina, Dept Pediat, Charleston, SC USA
[5] Childrens Natl Hosp, Div Dermatol, Washington, DC USA
[6] George Washington Sch Med & Hlth Sci, Dept Dermatol, Washington, DC USA