Funding for this research was provided by:
National Natural Science Foundation of China (61273209, 71501135, 71571123, 71532007)
ORCID
Jie Ding: https://orcid.org/0000-0002-5935-9742
Publication History
Received: 2016-09-20
Accepted: 2016-11-04
Crosschecked: 2017-11-06
Content Type
: Article
Copyright
: © Zhejiang University and Springer-Verlag GmbH Germany 2017