The Hirschsprung and anorectal malformation quality of life (HAQL) questionnaire is a disease-specific quality of life questionnaire with 5 different elements (3 questionnaires for patients (categories: age 8-11, 12-16, and >17 years) and two questionnaires for parents of patients (categories: patients aged 8-11 and 12-16 years).

In the first part of this study, the questionnaires will be translated via forward-backward-translation, culturally adapted and evaluated for content validity.

In the second part of the study, the questionnaires will be validated in a cohort of all eligible Hirschsprung patients from Odense University Hospital from 1985-2014.

Inclusion Criteria:

• Diagnosed with Hirschsprung's Disease between the years 1985-2014
• Age > 7 years
• Good Danish comprehension
• Signed informed consent

Exclusion Criteria:

• Inability to follow the procedures of the study, e.g. due to language problems, severe psychological disorders, dementia, etc.

Based on the ICD-10 code for Hirschsprung's disease, all patients with Hirschsprung's disease diagnosed in Odense University Hospital will be offered to participate in the study. The diagnosis must be registered between the years 1985-2014 and the patient must be > 7 years at the study initiation.