TY - JOUR JO - International Journal of Occupational Medicine and Environmental Health J2 - Int J Occup Med Environ Health. SN - 1232-1087 VL - 24 IS - 4 PY - 2011 ID - Szeszenia-DÄ…browska2011 TI - Letter to the Editor AU - Szeszenia-DÄ…browska, Neonila SP - 420 EP - 421 DA - 2011 DO - 10.2478/s13382-011-0045-8 UR - https://doi.org/10.2478/s13382-011-0045-8 ER -