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Ringh M, Jonsson M, Nordberg P, Fredman D, Hasselqvist-Ax I, Håkansson F, Claesson A, Riva G, Hollenberg J.Ringh M, et al. Among authors: hakansson f.Resuscitation. 2015 Jun;91:1-7. doi: 10.1016/j.resuscitation.2015.02.032. Epub 2015 Mar 12.Resuscitation. 2015.PMID: 25771499