Funding for this research was provided by:
Directorate for Engineering (CMMI 1300638)
National Science Foundation (DMS 1512422)
National Institutes of Health (P50 DA036107, P50 DA039838)
National Nature Science Foundation of China (11690014, 11690015)
Article History
Received: 23 February 2015
Accepted: 24 January 2017
First Online: 10 February 2017