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Smith MA, Sherrah M, Sultana F, Castle PE, Arbyn M, Gertig D, Caruana M, Wrede CD, Saville M, Canfell K.Smith MA, et al.BMJ. 2022 Mar 30;376:e068582. doi: 10.1136/bmj-2021-068582.BMJ. 2022.PMID: 35354610Free PMC article.