# Correction: Sample Size Requirements to Test Subgroup-Specific Treatment Effects in Cluster-Randomized Trials

**Authors:** Xueqi Wang, Keith S. Goldfeld, Monica Taljaard, Fan Li

PMC · DOI: 10.1007/s11121-023-01615-0 · 2024-01-05

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Source: https://tomesphere.com/paper/PMC11390812