. 2019 Sep 18;10:973. doi: 10.3389/fphar.2019.00973
Copyright © 2019 Ali, Prieto-Alhambra, Lopes, Ramos, Bispo, Ichihara, Pescarini, Williamson, Fiaccone, Barreto and Smeeth
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Figure 4.
Methods to assess treatment effect modification in propensity score matching.