e252 www.ccmjournal.org March 2020 • Volume 48 • Number 3 2. Karim ME, Gustafson P, Petkau J, et al: Marginal structural Cox models for estimating the association between β-interferon exposure… Click to show full abstract
e252 www.ccmjournal.org March 2020 • Volume 48 • Number 3 2. Karim ME, Gustafson P, Petkau J, et al: Marginal structural Cox models for estimating the association between β-interferon exposure and disease progression in a multiple sclerosis cohort. Am J Epidemiol 2014; 180:160–171 3. Lu B: Propensity score matching with time-dependent covariates. Biometrics 2005; 61:721–728 DOI: 10.1097/CCM.0000000000004111
               
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