Childhood cancer survivors
Survivors included in the LATER cohort were traced via the Municipal
Personal Records Database (Dutch: Basisregistratie Personen [BRP])
to identify their vital status and most recent address. All survivors
confirmed alive and with a known address in the Netherlands were
eligible for invitation. Survivors who were lost to follow-up, living
abroad, objected to participate in any scientific research, or who were
considered ineligible to participate by their late effects physician
(e.g. on active cancer treatment) were excluded.