| ESPGHAN | European Society for Paediatric Gastroenterology, Hepatology and Nutrition |
| FIGDs | Functional Gastrointestinal Diseases |
| GER | Gastroesophageal Reflux |
| I-GERQ-R | Infant Gastroesophageal Reflux Questionnaire Revised |
| NASPGHAN | North American Society for Pediatric Gastroenterology, Hepatology and Nutrition |
| NICE | National Institute for Health and Care Excellence |
| PPI | Proton Pump Inhibitor |