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Evans BA, Akbari A, Bailey R, et al. Evaluation of the shielding initiative in Wales (EVITE Immunity): protocol for a quasiexperimental study. BMJ Open 2022;0:e059813. doi:10.1136/bmjopen-2021-059813
This article has been corrected since it was published online. A new author “Victoria Williams” has been added to the author byline.
