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Hawkins M, Elsworth GR, Osborne RH.Hawkins M, et al.Qual Life Res. 2018 Jul;27(7):1695-1710. doi: 10.1007/s11136-018-1815-6. Epub 2018 Feb 20.Qual Life Res. 2018.PMID: 29464456Free PMC article.