https://www.cochrane.org/fr/CD014580/GUT_prise-en-charge-de-la-constipation-refractaire-chez-lenfant 2024 United Kingdom review of literature french abstract Have Constipation Constipation Charge constipation Constipation, CTCAE Child Relation Usual Severity Constipation child How Much Distress Constipation child, nos obstipation constipation patient care management How Often Constipation Child Individual Refractory