Funding for this research was provided by:
National Science Foundation (1551489, 1450681, STC-1231306)
U.S. Department of Energy (DE-AC02-76SF00515, DE-SC0002164, DE-AC52-07NA27344)
Foundation for the National Institutes of Health (R01 GM117342-01, R01 GM095583)
Received: 23 January 2018
Accepted: 3 May 2018
First Online: 31 May 2018
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interests.
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