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Goldberg N, Roman CF, Cha SD, Weiner R, Maranhao V, Eldredge J, Fernandez J.Goldberg N, et al. Among authors: cha sd.Cathet Cardiovasc Diagn. 1989 Feb;16(2):133-5. doi: 10.1002/ccd.1810160214.Cathet Cardiovasc Diagn. 1989.PMID: 2644043Review.
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Salvucci TJ, Roman C, Cha SD, Maranhao V.Salvucci TJ, et al. Among authors: cha sd.Clin Cardiol. 1990 Sep;13(9):644-8. doi: 10.1002/clc.4960130911.Clin Cardiol. 1990.PMID: 2145110Free article.