Zhang, Bin-Fei
Lei, Jin-Lai
Zhang, Hong
Wang, Peng-Fei
Wang, Hu
Cong, Yu-Xuan
Huang, Hai
Zhuang, Yan
Article History
Received: 5 August 2018
Accepted: 21 December 2018
First Online: 7 January 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Xi’an Jiaotong University (No. 2016053). Each patient provided informed consent before examination by ultrasonography.
: Not applicable.
: The authors declare that they have no competing interests.
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