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Assessing Bias in Studies of Prognostic Factors
Jill A. Hayden, DC, PhD; Danielle A. van der Windt, PhD; Jennifer L. Cartwright, MSc; Pierre Côté, DC, PhD; Claire Bombardier, MD
Annals of Internal Medicine 2013;158:280-286. doi:10.7326/0003-4819-158-4-201302190-00009

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