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Hayward KL, Valery PC, Patel PJ, Horsfall LU, Wright PL, Tallis CJ, Stuart KA, David M, Irvine KM, Cottrell WN, Martin JH, Powell EE.Hayward KL, et al. Among authors: cottrell wn.Intern Med J. 2020 Sep;50(9):1142-1146. doi: 10.1111/imj.14986.Intern Med J. 2020.PMID: 32929822Free PMC article.Clinical Trial.