Biaoxue, Rong
Min, Li
Tian, Fu
Wenlong, Gao
Hua, Liu
Article History
Received: 24 July 2018
Accepted: 26 November 2018
First Online: 6 December 2018
Ethics approval and consent to participate
: This study is a non-blind, non-randomized, retrospective, observative study. The sampling and treatment of all patients were conducted under the guideline of medical ethics principles, and all patients signed informed consent before being included in the study. The study was approved by Research Ethics Committees of research institutes (First Affiliated Hospital, Xi’an Medical University, Xi’an, China; Shenmu Hospital, Shenmu, China; Jining NO.1 People’s Hospital, Jining, China; Gansu Provincial Hospital, Lanzhou, China). We declare that all research strategies and methods used in this study were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.
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