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Gabriel SE, O'Fallon WM, Beard CM, Kurland LT, Woods JE, Melton LJ 3rd.Gabriel SE, et al.J Clin Epidemiol. 1995 Apr;48(4):527-37. doi: 10.1016/0895-4356(94)00209-9.J Clin Epidemiol. 1995.PMID: 7722609