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Svendsen JH, Madsen JK, Saunamäki KI, Grande P, Pedersen F, Clemmensen P, Ha Edersdal C, Granborg J.Svendsen JH, et al. Among authors: clemmensen p.Eur Heart J. 1992 Jan;13(1):33-8. doi: 10.1093/oxfordjournals.eurheartj.a060044.Eur Heart J. 1992.PMID: 1577028Clinical Trial.