1. Department of Pediatrics and Allergy; Medical University of Lodz, N. Copernicus Hospital; Lodz Poland
2. Military Teaching Hospital No. 2; Medical University of Lodz; Poland
3. Department of Laboratory Diagnostics; Medical University of Lodz, N. Barlicki Hospital; Lodz Poland
4. Faculty of Nursing and Midwifery; The Division of Nursing; Medical University of Lodz; Lodz Poland
5. Institute of Dental Surgery, Faculty of Medicine and Dentistry; Medical University of Lodz; Lodz Poland
6. Department of Social and Preventive Medicine; Medical University of Lodz; Lodz Poland