Funding for this research was provided by:
National Key R&D Program of China (2016YFC1305700)
National Key Scientific Instrument and Equipment Development Project of China (No. 51627808)
Article History
Received: 20 September 2018
Accepted: 20 October 2018
First Online: 31 October 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: 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. This study was approved by the ethical review committee of Jiangsu Provincial Center for Disease Control and Prevention (JSJK2016-B003-03).
: Informed consent was obtained from all participants included in the study.