Funding for this research was provided by:
National Natural Science Foundation of China (61673324, 61503314)
National Science Foundation (DMS-1518001, OCE-1136818)
National Institutes of Health (R01GM120624)
China Scholarship Council (201606315011)
Natural Science Foundation of Fujian Province (2016J01316)
Article History
Received: 3 May 2017
Accepted: 11 September 2017
First Online: 20 September 2017
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