Emary KRW, Golubchik T, Aley PK, Ariani CV, et al. Efficacy of ChAdOx1 nCoV-19 (AZD1222) vaccine against SARS-CoV-2 variant of concern 202012/01 (B.1.1.7): an exploratory analysis of a randomised controlled trial. Lancet 2021 Mar 30. pii: S0140-6736(21)00628.
PMID: 33798499