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HARVARD Citation
Pizzi, C. et al. (2011). Sample selection and validity of exposure–disease association estimates in cohort studies. Journal of epidemiology and community health. 65 (5), pp. 407-411. [Online].
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Pizzi, C. et al. (2011). Sample selection and validity of exposure–disease association estimates in cohort studies. Journal of epidemiology and community health. 65 (5), pp. 407-411. [Online].