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Califf RM, Harrell FE Jr, Lee KL, Rankin JS, Hlatky MA, Mark DB, Jones RH, Muhlbaier LH, Oldham HN Jr, Pryor DB.Califf RM, et al. Among authors: mark db.JAMA. 1989 Apr 14;261(14):2077-86.JAMA. 1989.PMID: 2784512