1. Faculty of Medicine Vilnius University Vilnius Lithuania
2. Center for Pediatric Oncology and Hematology Vilnius University Hospital Santaros Klinikos Vilnius Lithuania
3. Republican Vilnius University Hospital Vilnius Lithuania
4. Division of Multiple Sclerosis Vilnius University Santaros Klinikos Vilnius Lithuania
5. Clinic of Dental and Oral Diseases, Faculty of Odontology Kaunas University of Medicine Kaunas Lithuania