Funding for this research was provided by:
National Basic Research Program of China (973 Program) (No. 2017YFC1309900)
National Key Research and Development Program of China (No. 2016YFC1306105)
Science and Technology Planning Project of Shenzhen Municipality (JCYJ20160429185235132)
Sanming Project of Medicine in Shenzhen (SZSM201612079)
Received: 17 July 2020
Accepted: 28 April 2021
First Online: 18 May 2021
: The research protocol was approved by the Ethics Committee of the Second Xiangya Hospital, Central South University, China. All procedures performed in studies involving human participants were in accordance with the ethical standards of the Institutional Research Committee and with the 1964 Helsinki declaration and its later amendments, or in accordance with comparable ethical standards. All enrolled students signed an official written consent form that had been approved by the Ethics Committee.
: Not Applicable.
: The authors declare that they have no conflict of interest.