[1] Ctr Occupat Med Prov Ctr, Wloclawek, Poland
[2] Nicholas Copernicus Univ, Dept Dermatol Venereal Dis & Immunodermatol, Coll Med, Bydgoszcz, Poland
[3] J Brudzinski Prov Childrens Hosp, Prov Clin Dermatol Children & Teenagers, Bydgoszcz, Poland
[4] Univ Warmia & Mazury, Dept Dermatol Venereal Dis & Clin Immunol, Olsztyn, Poland