1. Department of hygiene and prophylactic toxicology , Danylo Halytsky Lviv National Medical University , Pekarska 69, 79010 Lviv , Ukraine
2. Central Research Laboratory and Laboratory of Industrial Toxicology , Danylo Halytsky Lviv National Medical University , Ukraine
3. Department of Pediatrics , Danylo Halytsky Lviv National Medical University , Ukraine