Natural rubber latex allergy: antigen specific IgE in Polish blood donors, prevalence and risk factors - preliminary data - Dudek, Wojciech; Walusiak, Jolanta; Wittczak, Tomasz; Krakowiak, Anna; Marciniak-Bielak, Dioniza; Raulf-Heimsoth, Monika; Pałczyński, Cezary (Nofer Institute of Occupational Medicine)