Funding for this research was provided by:
National Institutes of Health (1R01MD007705)
U.S. Department of Veterans Affairs (RCS 02-066)
Robert Wood Johnson Foundation (NIDDK 1K23DK098280-01)
Received: 29 August 2017
Accepted: 2 May 2018
First Online: 16 May 2018
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board at Boston University and a waiver of consent was granted.
: The authors declare that they have no competing interests.
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