Yuan, Zhen
Bian, Ning
Hao, Yuefeng
Zong, Lu-jie
Kou, Yu
Hu, Dan
Article History
Received: 18 April 2018
Accepted: 3 July 2018
First Online: 25 July 2018
Ethics approval and consent to participate
: This study was approved by the Affiliated Suzhou Hospital of Nanjing Medical University Ethics Committee. No written/verbal consent was needed for this study because cadavers were used.
: Not applicable.
: The authors declare that they have no competing interests.
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