Objectively identified comorbidities in COPD: impact on pulmonary rehabilitation outcomes.
Rafael Barreto de MesquitaLowie E G W VanfleterenFrits M E FranssenJaneli SarvZiad TaibMiriam T J GroenenSwetlana GaffronPiet L B BruijnzeelFabio PittaEmiel F M WoutersMartijn A SpruitPublished in: The European respiratory journal (2015)