Association between previous rheumatoid arthritis and COVID-19 and its severity: a nationwide cohort study in South Korea
Objectives The prevalence of rheumatoid arthritis (RA) among patients with COVID-19 and the association between RA and the outcome of COVID-19 remain unclear. We aimed to compare the prevalence of RA between participants with and without COVID-19; we then analysed the association between the presenc...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
BMJ Publishing Group
2021-10-01
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| Series: | BMJ Open |
| Online Access: | https://bmjopen.bmj.com/content/11/10/e054753.full |
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