Hoogendoorn, MFeenstra, TLrivmSchermer, TRHesselink, AERutten-van Molken, MP2025-03-182025-03-18200615894477https://rivm.openrepository.com/handle/10029/641782Severity distribution of chronic obstructive pulmonary disease (COPD) in Dutch general practiceArticleRespir Med 2006; 100(1):83-62025-03-18