Chang, Fang
Fan, Xin
Zhang, Yi
Tang, Bin
Jia, Xiyuan
Article History
Received: 25 February 2021
Accepted: 13 December 2021
First Online: 16 January 2022
Declarations
:
: The study protocol, consent forms, and survey instruments were submitted to and approved by the Stanford University Institutional Review Board (IRB protocol 43792). Permissions were received from the local Ministry of Health in the study area, and from the directors of all participating hospitals. All respondents were informed about the study procedure and provided their informed written consent. The principles of the Declaration of Helsinki were followed throughout.
: Not applicable.
: The authors declare no conflict of interest. The founding sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.