| AAF | Amino acid-based formula |
| CM | cow’s milk |
| CMA | cow’s milk protein allergy |
| CoMiSS | cow’s milk related symptom score |
| EoE | eosinophilic esophagitis |
| FGIDs | functional gastrointestinal disorders |
| GER | gastroesophageal reflux |
| GERD | gastroesophageal reflux disease |
| I-GERQ-R | revised infant GER questionnaire |
| PPI | proton pump inhibitors |