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Xie X, Gidding SS, Gardin JM, Bild DE, Wong ND, Liu K.Xie X, et al. Among authors: gidding ss.J Am Soc Echocardiogr. 1995 Nov-Dec;8(6):771-9. doi: 10.1016/s0894-7317(05)80001-x.J Am Soc Echocardiogr. 1995.PMID: 8611277