[1] Howard Univ, Coll Med, Dept Dermatol, Washington, DC USA
[2] Univ Calif San Francisco, Sch Med, Dept Dermatol, San Francisco, CA USA
[3] Amer Acad Dermatol, Rosemont, IL USA
[4] Mayo Clin, Dept Dermatol, Jacksonville, FL USA
[5] Mayo Clin, Dept Lab Med & Pathol, Jacksonville, FL USA
[6] Mayo Clin, Dept Dermatol, 4500 San Pablo Rd S, Jacksonville, FL 32224 USA