[1] Texas A&M Univ, Dept Dermatol, Syst Hlth Sci Ctr, College Stn, TX USA
[2] George Washington Univ, Dept Dermatol, Sch Med & Hlth Sci, Washington, DC USA
[3] George Washington Univ, Sch Med & Hlth Sci, Dept Dermatol, Suite 2B-425,2150 Penn Ave NW, Washington, DC 20037 USA