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Chan-Yeung M, Dimich-Ward H, Enarson DA, Kennedy SM.Chan-Yeung M, et al. Among authors: kennedy sm.Am J Epidemiol. 1992 Nov 15;136(10):1269-79. doi: 10.1093/oxfordjournals.aje.a116435.Am J Epidemiol. 1992.PMID: 1476149