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. 2021 Aug 1;75(10):e14640. doi: 10.1111/ijcp.14640

TABLE 2.

Characteristics of the selected studies for the meta‐analysis

Study Country Total Adults Children
Pierce 18 USA 125 60 65
Chen 19 China 61 47 14
Du 20 China 67 53 14
Han 21 China 32 25 7
Luo 22 China 625 588 37
Total 910 773 137