[1] Univ Minnesota Twin Cities, Sch Med, Minneapolis, MN USA
[2] Zealand Univ Hosp, Dept Dermatol, Roskilde, Denmark
[3] Univ Copenhagen, Dept Dermatol, Copenhagen, Denmark
[4] Univ Minnesota, Clin & Translat Sci Inst, Biostat Design & Anal Ctr, Minneapolis, MN USA
[5] Womens Coll Hosp, Div Dermatol, Dept Med, Toronto, ON, Canada
[6] Univ Toronto, Div Dermatol, Dept Med, Toronto, ON, Canada
[7] Rockefeller Univ, 1230 York Ave, New York, NY 10021 USA
[8] Univ Minnesota, Dept Med, Box 736 UMHC, Minneapolis, MN 55455 USA
[9] Univ Minnesota, Dept Dermatol, Minneapolis, MN 55455 USA
[10] Minneapolis Vet Affairs Hlth Care Syst, Dept Med, Minneapolis, MN 55417 USA
[11] Minneapolis Vet Affairs Hlth Care Syst, Dept Dermatol, Minneapolis, MN 55417 USA