Effectiveness of the CoronaVac vaccine in older adults during a gamma variant associated epidemic of covid-19 in Brazil: test negative case-control study
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doi.org/10.1136/bmj.n2015 →Countries where authors are citing Effectiveness of the CoronaVac vaccine in older adults during a gamma variant associated epidemic of covid-19 in Brazil: test negative case-control study
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This paper is also available at doi.org/10.1136/bmj.n2015.