| Authors: |
Cyprowski M; Central Institute for Labour Protection-National Research Institute, 16 Czerniakowska St., 00-701, Warsaw, Poland. macyp@o2.pl., Stobnicka-Kupiec A; Central Institute for Labour Protection-National Research Institute, 16 Czerniakowska St., 00-701, Warsaw, Poland., Ławniczek-Wałczyk A; Central Institute for Labour Protection-National Research Institute, 16 Czerniakowska St., 00-701, Warsaw, Poland., Bakal-Kijek A; Central Institute for Labour Protection-National Research Institute, 16 Czerniakowska St., 00-701, Warsaw, Poland., Gołofit-Szymczak M; Central Institute for Labour Protection-National Research Institute, 16 Czerniakowska St., 00-701, Warsaw, Poland., Górny RL; Central Institute for Labour Protection-National Research Institute, 16 Czerniakowska St., 00-701, Warsaw, Poland. |