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Kupferwasser I, Mohr-Kahaly S, Erbel R, Makowski T, Wittlich N, Kearney P, Mumm B, Meyer J.Kupferwasser I, et al. Among authors: kearney p.J Am Soc Echocardiogr. 1994 Nov-Dec;7(6):561-70. doi: 10.1016/s0894-7317(14)80078-3.J Am Soc Echocardiogr. 1994.PMID: 7840983