Intelligence and Neurodevelopmental Disorders After Prenatal Exposure to General Anaesthesia

Prenatal anaesthesia exposure: Inclusion Criteria: * Prenatal anaesthesia exposure: Children exposed in utero to maternal general anaesthesia to allow laparoscopy or laparotomy for appendicectomy, adnexal pathology, cholecystectomy or for diagnostic procedures to rule out intra-abdominal pathology * No prenatal anaesthesia exposure: Children not exposed to general anaesthesia for non-obstetric or obstetric (e.g. cesarean section) surgery in utero * Children exposed to inflammation: Children born to mothers diagnosed with inflammatory bowel disease (IBD) who had a flare-up during pregnancy without being exposed to general anaesthesia for non-obstetric or obstetric (e.g. cesarean section) surgery in utero. * Children born in 2000-2023 * (Parental) informed consent Exclusion Criteria: * Children whose mothers underwent obstetric surgery or foetal surgery/interventions during the same pregnancy. * No Dutch-speaking children * Diagnosis of severe disability of genetic origin (e.g., Fragil X, Down syndrome,…), history of head trauma, major congenital birth defects