Funding for this research was provided by:
National Natural Science Foundation of China (81401307)
Guangdong Province science and technology planning project (2016A0103038)
Article History
Received: 28 June 2018
Accepted: 8 November 2018
First Online: 12 November 2018
Compliance with ethical standards
:
: Dr. DW declares no conflict of interest related to the submitted work. Dr. CZ declares no conflict of interest related to the submitted work. Dr. ZJ declares no conflict of interest related to the submitted work. Dr. TJ declares no conflict of interest related to the submitted work. Dr. TM declares no conflict of interest related to the submitted work. Dr. YY declares no conflict of interest related to the submitted work.
: Ethical approval was agreed by the ethical committee of our institution, Sun Yat-sen University First Affiliated Hospital, Guangzhou, People’s Republic of China.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was waived from all participants.