Funding for this research was provided by:
Major Research Plan (71373092)
Received: 18 June 2019
Accepted: 31 July 2019
First Online: 7 August 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Tongji Medical College, Huazhong University of Science and Technology (NO: IORG 0003571).Written consent was obtained from each participant in current study.
: Written consent for publication was obtained from each participant prior to the survey.
: The authors declare no conflict of interest.