Groenen, MJMHirs, WBecker, HKuipers, EJVan Berge Henegouwen Berge, GPFockens, POuwendijk, RJT2025-03-192025-03-1920071738040010.1007/s10620-006-9272-4https://rivm.openrepository.com/handle/10029/642163Gastrointestinal endoscopic terminology coding (GET-C): a WHO-approved extension of the ICD-10ArticleDig Dis Sci 2007; 52(4):1004-82025-03-19