1. "Department of Children’s Diseases and Pediatric Surgery, I. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine"
2. Pediatric Immunology and Rheumatology Clinic, Western-Ukrainian Specialized Children’s Medical Centre, Lviv, Ukraine
3. Department of Children's Infectious Diseases and Pediatric Immunology, Shupyk National Medical Academy of Postgraduate Education, Kyiv, Ukraine
4. Department of Children’s Diseases and Pediatric Surgery, I. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine