[1] Univ Calif San Francisco, Dept Dermatol, Program Clin Res, San Francisco, CA 94143 USA
[2] Harvard Med Sch, Massachusetts Gen Hosp, Dept Dermatol, Boston, MA USA
[3] Emory Univ, Dept Dermatol, Atlanta, GA 30322 USA
[4] Atlanta Vet Affairs Med Ctr, Atlanta, GA USA
[5] Univ Colorado, Sch Med, Dept Dermatol, Aurora, CO USA
[6] Univ British Columbia, Dept Dermatol & Skin Sci, Vancouver, BC, Canada
[7] Univ Utah, Dept Dermatol, Salt Lake City, UT USA
[8] Univ Utah, Dept Populat Hlth Sci, Salt Lake City, UT USA
[9] Northwestern Feinberg Sch Med, Dept Dermatol, Chicago, IL USA
[10] Univ Cent Florida, Coll Med, Dept Dermatol, Orlando, FL 32816 USA
[11] Ameriderm Res, Ormond Beach, FL USA
[12] Univ Illinois, Coll Med, Dept Med, Urbana, IL 61801 USA
[13] Vet Affairs Med Ctr, Ctr DermatoEpidemiol, Providence, RI USA
[14] Brown Univ, Dept Dermatol, Providence, RI 02912 USA
[15] Brown Univ, Dept Epidemiol, Providence, RI 02912 USA
[16] Kaiser Permanente Los Angeles Med Ctr, Dept Dermatol, Los Angeles, CA USA
[17] Vanderbilt Univ, Med Ctr, Dept Dermatol, Nashville, TN USA
[18] Florida State Univ Coll, Dermatol, Orlando, FL USA