https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-023-16265-8
Background Regarding the paucity of evidence on the side effects of the booster dose of Oxford AstraZeneca vaccine in vaccinated people with Sinopharm or Sputnik V, we aimed to set up a cohort event monitoring (CEM) study to capture adverse events occurring i…
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