Funding for this research was provided by:
National Institutes of Health (R01EB021360)
North Carolina Biotechnology Center (2016-BIG-6520)
Received: 8 December 2017
Accepted: 23 January 2018
First Online: 9 February 2018
Compliance with ethical standards
: Authors have no conflicts of interest to declare.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.
: The requirement for informed consent was waived by the institutional review board.