Katikireddi SV, Cerqueira-Silva T, Vasileiou E, Robertson C, et al. Two-dose ChAdOx1 nCoV-19 vaccine protection against COVID-19 hospital admissions
and deaths over time: a retrospective, population-based cohort study in Scotland
and Brazil. Lancet 2021 Dec 20. pii: S0140-6736(21)02754.
PMID: 34942103
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