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Mikkelsen MM, Fenger-Eriksen C, Johnsen SP, Christensen TD, Sørensen B.Mikkelsen MM, et al.Scand Cardiovasc J. 2011 Apr;45(2):120-6. doi: 10.3109/14017431.2010.545143. Epub 2010 Dec 29.Scand Cardiovasc J. 2011.PMID: 21189095Free article.