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. 2022 Mar 9;12:844390. doi: 10.3389/fonc.2022.844390

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Copyright © 2022 Zhang, Yao, Zhang, Huang, Wang and Huang

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Forest plot showing the pooled effects of diagnostic performance of double contrast-enhanced ultrasonography compared with CT in diagnosing T1 (A) and T2 (B) with only homogeneous studies included.