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Sawka CA, Pritchard KI, Lickley HL, Oldfield GA, Chapman JA, Allen GG, Mobbs BG, Hanna WM, Kahn H, Trudeau ME, et al.Sawka CA, et al. Among authors: trudeau me.J Clin Epidemiol. 1995 Jun;48(6):779-86. doi: 10.1016/0895-4356(94)00176-q.J Clin Epidemiol. 1995.PMID: 7769408