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Block M, Hourigan L, Bellows WH, Reeves J 3rd, Romson JL, Tran M, Pastor D, Schiller NB, Leung JM.Block M, et al. Among authors: bellows wh.J Am Soc Echocardiogr. 2002 Feb;15(2):143-9. doi: 10.1067/mje.2002.121399.J Am Soc Echocardiogr. 2002.PMID: 11836489