Chen, Tianwen
Liu, Zeming
Zeng, Wen
Huang, Tao
Article History
Received: 9 June 2017
Accepted: 24 January 2018
First Online: 27 December 2019
Competing interests
: All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript.