Funding for this research was provided by:
Sanming Project of Medicine in Shenzhen (SMGC201705029)
National Natural Science Foundation of China (81902033)
Natural Science Foundation of Guangdong Province (2020A1515010052)
Science and Technology Planning Project of Shenzhen Municipality (JCYJ20180302144721183, JCYJ20180302144431923)
Received: 10 March 2020
Accepted: 22 June 2020
First Online: 1 July 2020
Ethics approval and consent to participate
: All procedures involving human participants were approved by the ethics committee of Shenzhen Nanshan People’s Hospital, in accordance with the ethical standards of Shenzhen University and the 1964 Helsinki declaration and its later amendments, or comparable ethical standards. For this type of study, formal consent is not required.
: Not applicable.
: The authors declare that they have no competing interests.