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Helin-Salmivaara A, Virtanen A, Vesalainen R, Grönroos JM, Klaukka T, Idänpään-Heikkilä JE, Huupponen R.Helin-Salmivaara A, et al. Among authors: gronroos jm.Eur Heart J. 2006 Jul;27(14):1657-63. doi: 10.1093/eurheartj/ehl053. Epub 2006 May 26.Eur Heart J. 2006.PMID: 16731535