Tong, Guojun
Zhang, Guiyang
Liu, Jian
Zheng, Zhaozheng
Chen, Yan
Li, Min
Zhong, Yan
Niu, Pingping
Xu, Xuting
Article History
Received: 26 November 2019
Accepted: 17 March 2020
First Online: 30 March 2020
Ethics approval and consent to participate
: This study was performed in accordance with the ethical guidelines of the 1975 Declaration of Helsinki. This is a retrospective study. All included patients were verbally informed that refusal to cooperate with follow-up work would not affect subsequent examination and treatment after surgery, following the principle of voluntary participation, and that the study does not pose any risk to the further diagnosis and treatment of patients which was approved by the ethics committee of Huzhou Central Hospital. Questionnaires used in the present study were previously evaluated and found to be reliable (REF. [CitationRef removed])
: Not applicable.
: All authors of this manuscript directly participated in the planning and analysis of this study. All authors declare that they have no conflicts of interest.