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Authors
Ma, Lulu
Zhang, Jianguo
Shen, Jianxiong
Zhao, Yu
Li, Shugang
Yu, Xuerong http://orcid.org/0000-0002-2098-0910
Huang, Yuguang
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Funding
Funding for this research was provided by:
CAMS innovation Fund for Medical Sciences (2016-I2 M-3-024)
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Article History
Received: 19 July 2018
Accepted: 11 June 2019
First Online: 22 June 2019
Ethics approval and consent to participate
: This retrospective study was approved by the Ethic Committee of Peking Union Medical College Hospital and written informed consent was not required for retrospective studies.
: Consent for publication of radiograph had been obtained from their parents.
: The authors declare that they have no competing interests.
