[1] Mayo Clin, Coll Med & Sci, Sch Grad Med Educ, Dept Dermatol, 200 First St SW, Rochester, MN 55905 USA
[2] Erasmus MC, Dept Dermatol, Dr Molewater Pl 50,EE-802, NL-3000 CA Rotterdam, Netherlands
[3] Charite Univ Med Berlin, Psoriasis Res & Treatment Ctr, Dept Dermatol Venereol & Allergol, Luisenstr 2, D-10117 Berlin, Germany
[4] Charite Univ Med Berlin, Inst Med Immunol, Luisenstr 2, D-10117 Berlin, Germany
[5] Free Univ Berlin, Luisenstr 2, D-10117 Berlin, Germany
[6] Humboldt Univ, Luisenstr 2, D-10117 Berlin, Germany
[7] Mayo Clin, Dept Dermatol, 200 First St SW, Rochester, MN 55905 USA