Qin, Xuzhen
Qiu, Ling
Tang, Guodong
Tsoi, Man-Fung
Xu, Tao
Zhang, Lin
Qi, Zhihong
Zhu, Guangjin
Cheung, Bernard M. Y. http://orcid.org/0000-0001-9106-7363
Funding for this research was provided by:
Key Technologies Research and Development Program (2006FY110300)
Article History
Received: 19 September 2019
Accepted: 24 February 2020
First Online: 6 March 2020
Ethics approval and consent to participate
: We clarify the source of materials used in our study, and any permissions to collect such samples comply with institutional, national, or international guidelines. Written informed consent was obtained from participants or a parent or guardian for participants under 16 years old.
: Not applicable.
: The authors declare that they have no competing interests.