| Literature DB >> 33443208 |
Daryl O Cheng1, John R Hurst2.
Abstract
Entities:
Keywords: COPD epidemiology; COPD exacerbations
Year: 2020 PMID: 33443208 DOI: 10.1136/thoraxjnl-2020-216637
Source DB: PubMed Journal: Thorax ISSN: 0040-6376 Impact factor: 9.139