Jia, Dong
Li, Xue-lian
Zhang, Qin
Hou, Gang http://orcid.org/0000-0003-3438-1764
Zhou, Xiao-ming
Kang, Jian
Article History
Received: 13 May 2019
Accepted: 12 August 2019
First Online: 19 August 2019
Ethics approval and consent to participate
: The use of patient records was approved by the Institutional Ethical Review Board of the First Hospital of China Medical University. Patient confidentiality was maintained.
: Not applicable.
: The authors declare that they have no competing interests.