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Amedeo Smart
Independent Medical Education
Horne EMF, Hulme WJ, Keogh RH, Palmer TM, et al. Waning effectiveness of BNT162b2 and ChAdOx1 covid-19 vaccines over six months since second dose: OpenSAFELY cohort study using linked electronic health records. BMJ 2022;378:e071249.PMID: 35858698
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