[1] Univ Hosp Munster, Ctr Chron Pruritus, Dept Dermatol, Von Esmarch Str 58, D-48149 Munster, Germany
[2] Heidelberg Univ, Dept Dermatol, Div Occupat Dermatol, Heidelberg, Germany
[3] Univ Oslo, Oslo Univ Hosp, Dept Dermatol, Oslo, Norway
[4] Lund Univ, Skane Univ Hosp, Dept Dermatol & Venereol, Lund, Sweden
[5] Med Univ Graz, Dept Dermatol, Graz, Austria
[6] Univ Cattolica Sacro Cuore, Rome, Italy
[7] Aydin Adnan Menderes Univ, Dept Dermatol, Aydin, Turkiye
[8] Univ Rzeszow, Dept Dermatol, Rzeszow, Poland
[9] Cent State Med Acad, Dept Dermatovenereol & Cosmetol, Dept Presidential Affairs, Moscow, Russia
[10] Lomonosov Moscow State Univ, Med Res & Educ Ctr, Moscow, Russia
[11] Moscow Sci & Pract Ctr Dermatovenerol & Cosmetol, Inst Healthcare Res Dermatol & Nursing IVDP, Competence Ctr Healthcare Res Dermatol CVderm, Moscow, Russia
[12] Charite Univ Med Berlin, Inst Allergol, Dept Dermatol & Allergy, Berlin, Germany
[13] Free Univ Berlin, Berlin, Germany
[14] Humboldt Univ, Berlin, Germany
[15] Fraunhofer Inst Translat Med & Pharmacol ITMP, Allergol & Immunol, Berlin, Germany
[16] Kantonsspital Aarau, Dept Dermatol, Aarau, Switzerland
[17] Univ Hosp Brest, Dept Dermatol, Brest, France
[18] St Pau Hosp, Dept Dermatol, Barcelona, Spain
[19] Univ Hosp, Dept Dermatol, Coimbra, Portugal
[20] Univ Coimbra, Fac Med, Coimbra, Portugal