[1] Natl Med Univ, Dept Dermatol & Venereol, Kiev, Ukraine
[2] Univ Zaragoza, Dept Psychol, Zaragoza, Spain
[3] Univ Med Ctr Hamburg Eppendorf, Inst Hlth Serv Res Dermatol & Nursing, German Ctr Hlth Serv Res Dermatol, Hamburg, Germany
[4] Skane Univ Hosp, Dept Dermatol & Venereol, Malmo, Sweden
[5] Whipps Cross Univ Hosp, London, England
[6] Queen Mary Univ, Sch Med, London, England
[7] Univ Hosp Erasme, Dept Dermatol, Brussels, Belgium
[8] Wroclaw Med Univ, Dept Dermatol, Wroclaw, Poland
[9] Univ Zaragoza, Hosp Miguel Servet, Dept Dermatol, Aragon Psychodermatol Res Grp GAI PD, Zaragoza, Spain
[10] Dali Med, Dermatol, Bucharest, Romania
[11] Univ Zagreb, Sch Med, Childrens Hosp Zagreb, Zagreb, Croatia
[12] Carol Davila Univ Med & Pharm, Dermatol Res Unit, Colentina Clin Hosp, Paediat Dermatol Discipline, Bucharest, Romania
[13] Carol Davila Univ Med & Pharm, Colentina Clin Hosp, Dept Paediat Dermatol, Bucharest, Romania
[14] Univ Hertfordshire, Sch Life & Med Sci, Hatfield, Herts, England
[15] IDI IRCCS, Clin Epidemiol Unit, Rome, Italy
[16] Ben Gurion Univ Negev, Dept Dermatol, Beer Sheva, Israel
[17] Leiden Univ, Hlth Med & Neuropsychol Unit, Leiden, Netherlands
[18] Cardiff Univ, Sch Med, Div Infect & Immun, Cardiff, Wales