1. Division of Gastroenterology, Hepatology, and Nutrition; Nemours Children's Hospital; Orlando FL USA
2. College of Medicine; University of Central Florida; Orlando USA
3. School of Medicine; University of Central Lancashire; Preston UK
4. Department of Medicine, Division of Gastroenterology and Hepatology, Center for Esophageal Diseases and Swallowing; University of North Carolina School of Medicine; Chapel Hill NC USA
5. Division of Pediatric Gastroenterology, Hepatology and Nutrition; University of Illinois College of Medicine at Peoria and Children's Hospital of Illinois; Peoria IN USA
6. Pediatric Gastroenterology; University Hospital Puerta de Hierro Majadahonda. Autonomous University of Madrid; Madrid Spain
7. Pediatrics, Gastroenterology & Hepatology & Nutrition; Nationwide Children's Hospital; Columbus OH USA
8. Pediatric Allergy; Nationwide Children's Hospital; Columbus OH USA
9. Clinical Pharmacogenomics and Translational Research; Nemours Children's Health System; Jacksonville FL USA