Wang, Lei
Wang, Liang
Song, Xuefei
Cui, Chang
Ma, Chunyue
Guo, Bing
Qin, Xingjun
Article History
Received: 26 May 2019
Accepted: 25 August 2019
First Online: 22 October 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of Shanghai Ninth People’s Hospital on 27 September 2017 (SH9H-2018-T43-1). Any protocol modifications will be submitted to the Ethics Committee for review and participants will be informed. After eligibility screening we will request signed consent from participants. Participants are also informed that their choice to participate or not participate in the study will not affect their access to health services or treatment, and that there is no penalty for not participating in the study.
: Not applicable.
: The authors declare that they have no competing interests.