The prevalence of comorbidities in COPD patients, and their impact on health status and COPD symptoms in primary care patients: a protocol for an UNLOCK study from the IPCRG.
Björn StällbergPedro M TeixeiraCoert BlomKarin LisspersIoanna TsiligianniRachel JordanMiguel RománNanne KleefstraOleksii KorzhDavid PriceNiels Henrik ChavannesPublished in: NPJ primary care respiratory medicine (2016)