Funding for this research was provided by:
National Institutes of Health (R25GM061222, GM0007667-34, 1SC1AI081659-01, >3SC1AI081659-02S1)
National Institutes of Health (IOS-0744498)
Article History
Received: 9 May 2015
Accepted: 8 October 2015
First Online: 23 October 2015