Funding for this research was provided by:
Duke University (Charles W. Hargitt Fellowship)
Article History
Received: 15 November 2017
Revised: 22 January 2018
Accepted: 22 February 2018
First Online: 28 February 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. All procedures performed in studies involving animals were in accordance with the ethical standards of Duke University’s Institutional Animal Care and Use Committee (protocol registry number A233-16-10).