[1] Lund Univ, Skane Univ Hosp, Dept Occupat & Environm Dermatol, SE-20502 Malmo, Sweden
[2] Sahlgrens Univ Hosp, Dept Dermatol, SE-41345 Gothenburg, Sweden
[3] Karolinska Inst, Inst Environm Med, SE-17176 Stockholm, Sweden
[4] Stockholm Cty Council, Ctr Occupat & Environm Med, Unit Occupat & Environm Dermatol, SE-17176 Stockholm, Sweden
[5] Orebro Univ Hosp, Dept Dermatol, SE-70185 Orebro, Sweden
[6] Umea Univ, Dept Publ Hlth & Clin Med, SE-90185 Umea, Sweden