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Stang J, Couto M, Carlsen K-H, et al. Increased bronchial parasympathetic tone in elite cross-country and biathlon skiers: a randomised crossover study. Br J Sports Med 2015;49:56–61. This article is being retracted on the request of the authors and with the Publisher's consent. The article included the statement ‘Ethics approval Regional Medical Ethics committee of medical and health research ethics, South East Norway, and the Norwegian data inspectorate’, when in fact the study did not itself have approval.