. 2021 Nov 19;9:700284. doi: 10.3389/fped.2021.700284
Copyright © 2021 Lenoir, Wanert, Bonnet, Méot, Tosello, Fouilloux, Ovaert and Malekzadeh-Milani.
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Figure 1.
Propensity score distribution. (A) Before matching; (B) after matching.