Wu, Y.
Ding, Y.
Cao, Q. F.
Qian, S. B.
Wang, C.
Duan, H. Q.
Gu, J.
Shen, H. B. http://orcid.org/0000-0002-1183-6570
Article History
Received: 1 October 2019
Accepted: 6 January 2020
First Online: 21 January 2020
Compliance with ethical standards
:
: On behalf of all authors, the corresponding author states that there is 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.
: Informed consent was obtained from all individual participants included in the study.