1. 2nd Internal Clinic, University Hospital of L. Pasteur and Faculty of Medicine University of Pavol Jozef Šafárik Košice, Tr. SNP 1, 04011 Košice, Slovakia
2. PharmIn Ltd., Karadžičova 16, 82108 Bratislava, Slovakia
3. 1st Internal Clinic, University Hospital and Jessenius Faculty of Medicine Comenius University, Kollárova 2, 03659 Martin, Slovakia
4. Department of Pediatrics, Faculty of Medicine Comenius University and National Institute of Children’s Diseases, Limbová 1, 83340 Bratislava, Slovakia
5. Department of Paediatrics, University Hospital Martin and Jessenius Faculty of Medicine Comenius University, Kollárova 2, 03601 Martin, Slovakia
6. Gastroenterology Clinic, Slovak Medical University and Bratislava University Hospital, Antolská 11, 85107 Bratislava, Slovakia
7. 2nd Children Clinic, Slovak Medical University and Children's Faculty Hospital, Nám L. Svobodu 4, 97409 Banská Bystrica, Slovakia
8. Gastroenterology and Hepatology Department, Children’s Faculty Hospital, Tr. SNP 1, 04011 Košice, Slovakia
9. Faculty of Public Health, Slovak Medical University, 83303 Bratislava, Slovakia