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. 2022 Apr 4;11:617167. doi: 10.3389/fonc.2021.617167

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Copyright © 2022 Zheng, Xu, Shan, Zhang, Su, Gao, Wang, Qi, Ding, Wang and Wang

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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Meta-analysis estimates, given named study is omitted. The results shows that only little variation in the estimates of CSM% is induced by omission of the one selected study. CI, confidence interval.