Is hypercapnia associated with poor prognosis in chronic obstructive pulmonary disease? A long-term follow-up cohort study
Crossref DOI link: https://doi.org/10.1136/bmjopen-2015-008909
Published Online: 2015-12-15
Published Print: 2015-12
Update policy: https://doi.org/10.1136/crossmarkpolicy
Yang, Hui
Xiang, Pingchao
Zhang, Erming
Guo, Weian
Shi, Yanwei
Zhang, Shuo
Tong, Zhaohui