Jiang, Heng
Xiang, Xiaojun
Hao, Wei
Room, Robin
Zhang, Xiaojie
Wang, Xuyi
Funding for this research was provided by:
the National Nature Science Foundation of China (81571306)
the China Medical Board (Global Health Project 13-132)
Article History
Received: 29 October 2017
Accepted: 28 March 2018
First Online: 9 May 2018
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.