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Hirst JA, Taal MW, Fraser SD, Mena JMO, O'Callaghan CA, McManus RJ, Taylor CJ, Yang Y, Ogburn E, Hobbs FR.Hirst JA, et al. Among authors: taal mw.Br J Gen Pract. 2022 Mar 31;72(717):e261-e268. doi: 10.3399/BJGP.2021.0477. Print 2022 Apr.Br J Gen Pract. 2022.PMID: 34990394Free PMC article.