Funding for this research was provided by:
National Natural Science Foundation of China (No. 81703249)
Shanghai Municipal Commission of Health and Family Planning (201640297)
Received: 24 August 2020
Accepted: 7 October 2020
First Online: 13 October 2020
Ethics approval and consent to participate
: The Institutional Review Board and the Committee on Research Involving Human Subjects of Xinhua Hospital, which is affiliated with Shanghai Jiao Tong University, approved the survey (reference number: XHEC-C-2019-114), and the research was carried out in compliance with the Helsinki Declaration. All participants provided written consent prior to participating in the survey.
: We have reviewed the final version of the manuscript and approve it for publication.
: The authors have no conflicts of interest.