Gao, Ziyun
Shan, Junqi
Wang, Bishi
Qiao, Luxin
Chen, Dexi
Zhang, Yulin
Funding for this research was provided by:
the National Natural Science Foundation of China (81371399, 81571178 and 81272266)
the Capital Health Development Research Projects (Capital Development 2014-1-1151)
the Project of Construction of Innovative Teams and Teacher Career Development for Universities and Colleges under Beijing Municipality (IDHT20150502)