- Correspondence to Dr Dylan Morrissey, Centre for Sports and Exercise Medicine, William Harvey Research Institute, Bart's and the London School of Medicine and Dentistry, Queen Mary University of London, Mile End Hospital, Bancroft road, London E1 4DG, UK;
- Accepted 9 June 2015
- Published in print 31 July 2015.
- Published first 14 July 2015.
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