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Sayers A, Thayer D, Harvey JN, Luzio S, Atkinson MD, French R, Warner JT, Dayan CM, Wong SF, Gregory JW.Sayers A, et al. Among authors: harvey jn.BMJ Open. 2015 Apr 13;5(4):e005644. doi: 10.1136/bmjopen-2014-005644.BMJ Open. 2015.PMID: 25869680Free PMC article.