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COVID-19 and ‘basal’ exacerbation frequency in COPD
- Correspondence to Professor John R Hurst, UCL Respiratory, University College London, London NW3 2PF, London, UK; j.hurst{at}ucl.ac.uk
Citation
COVID-19 and ‘basal’ exacerbation frequency in COPD
Publication history
- Accepted December 4, 2020
- First published December 22, 2020.
Online issue publication
April 16, 2021
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© Author(s) (or their employer(s)) 2021. No commercial re-use. See rights and permissions. Published by BMJ. This article is made freely available for use in accordance with BMJ’s website terms and conditions for the duration of the covid-19 pandemic or until otherwise determined by BMJ. You may use, download and print the article for any lawful, non-commercial purpose (including text and data mining) provided that all copyright notices and trade marks are retained.https://bmj.com/coronavirus/usage