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Kristoffersen M, Sandbakk Ø, Tønnessen E, Svendsen I, Paulsen G, Ersvær E, Nygård I, Rostad K, Ryningen A, Iversen VV, Skovereng K, Rønnestad BR, Gundersen H.Kristoffersen M, et al. Among authors: sandbakk o.Front Physiol. 2018 Mar 5;9:155. doi: 10.3389/fphys.2018.00155. eCollection 2018.Front Physiol. 2018.PMID: 29556201Free PMC article.