Lu, Yonghai http://orcid.org/0000-0001-6765-682X
Fang, Jinling
Zou, Li
Cui, Liang
Liang, Xu
Lim, Seng Gee
Dan, Yock-Young
Ong, Choon Nam
Article History
Received: 3 October 2017
Accepted: 18 January 2018
First Online: 31 January 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.
: Informed consent was obtained from all individual participants included in the study.