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Nagueh SF, Sun H, Kopelen HA, Middleton KJ, Khoury DS.Nagueh SF, et al. Among authors: middleton kj.J Am Coll Cardiol. 2001 Jan;37(1):278-85. doi: 10.1016/s0735-1097(00)01056-1.J Am Coll Cardiol. 2001.PMID: 11153752Free article.