[1] Fdn Acad Espanola Dermatol, Dept Dermatol, Complexo Hosp Pontevedra CHOP, Res Unit, Madrid, Spain
[2] Univ Clin Hamburg, German Ctr Hlth Serv Res Dermatol, Hamburg, Germany
[3] Harvard Univ, Sch Med, Dept Dermatol, Beth Israel Deaconess Med Ctr, Boston, MA 02115 USA
[4] Roskilde Hosp, Dept Dermatol, Roskilde, Denmark
[5] Ben Gurion Univ Negev, Fac Hlth Sci, Dept Qual Measures & Res, Clalit Hlth Serv,Tel Aviv & Siaal Res Ctr Family, Beer Sheva, Israel
[6] Univ Melbourne, Dept Dermatol Skin & Canc Fdn, St Vincents Hosp Melbourne, Melbourne, Vic, Australia
[7] Univ Amsterdam, Acad Med Ctr, Dept Dermatol, NL-1105 AZ Amsterdam, Netherlands
[8] Osped Maggiore, Ctr Studi GISED, Fdn Ric, Bergamo, Italy