Xiao-Qin Wang, Yang Li, Wen-Jing Kou, Yue Zhang, Xiao-Han Ren, Ming-Xu Wang, Department of Public Health, Xi’an Jiaotong University Health Science Center, Xi’an 710061, Shaanxi Province, China
Paul D Terry, Graduate School of Medicine, University of Tennessee Medical Center, Knoxville, TN 37920, United States
Zhao-Zhao Hui, The Nethersole School of Nursing, The Chinese University of Hong Kong, Hong Kong, China
Author contributions: Wang XQ wrote the manuscript; Wang XQ and Li Y analyzed the data; Li Y, Kou WJ, Zhang Y, Hui ZZ, and Ren XH performed the majority of the experiments; Wang XQ and Wang MX designed the research; Wang MX and Terry PD revised the manuscript.
Supported by the Fundamental Research Funds for the Central Universities, No. zdyf2017007; Project of Shaanxi Health and Culture Research Center, No. JKWH2019-Z02.
Institutional review board statement: This study was approved by the Institutional Review Board of Health Science Center of Xi’an Jiaotong University.
Informed consent statement: Informed consent was obtained from all study participants.
Conflict-of-interest statement: The authors declare no conflicts of interest.
Data sharing statement: No additional data are available.
STROBE statement: The authors have read the STROBE Statement-checklist of items, and the manuscript was prepared and revised according to the STROBE Statement-checklist of items.
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Corresponding author: Mingxu Wang, PhD, Professor, Department of Public Health, Xi’an Jiaotong University Health Science Center, 76 Yanta West Road, Xi’an 710061, Shaanxi Province, China. firstname.lastname@example.org
Received: September 6, 2019
Peer-review started: September 6, 2019
First decision: October 14, 2019
Revised: November 18, 2019
Accepted: January 6, 2020
Article in press: January 6, 2020
Published online: March 15, 2020