Funding for this research was provided by:
the National Key Technology R&D Program of China (2016YFC1305700)
Science and Technology Department of Jiangsu Province (BL2014079)
Text and Data Mining valid from 2018-08-29
Received: 14 June 2018
Accepted: 9 August 2018
First Online: 29 August 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 Jiangsu Provincial Center for Disease Control and Prevention and Zhongda Hospital, Southeast University and with the 1964 Helsinki Declaration and its later amendments.
: Informed consent was obtained from all participants included in the study.
: Data are available from the corresponding author for researchers who meet the criteria for access to confidential data. Please contact Zilin Sun (email: email@example.com).