Funding for this research was provided by:
John Fell Fund, University of Oxford (143/108)
National Science Foundation (BCS-1516633)
Received: 4 February 2019
Accepted: 24 June 2019
First Online: 6 July 2019
Ethics approval and consent to participate
: All samples were obtained under informed consent, and this research was reviewed and approved by the University of Oklahoma Health Sciences Center Institutional Review Board (IRB #4543).
: Not applicable
: The authors declare that they have no competing interests.