Funding for this research was provided by:
Diabetes Center, University of California, San Francisco (7-06-CVD-28)
Received: 1 November 2018
Accepted: 26 March 2019
First Online: 3 April 2019
Ethics approval and consent to participate
: All study participants provided informed consent and the study protocol was approved by the Colorado Multiple Institutional Review Board. This observational study was performed in consistent with the approved guidelines.
: Not applicable.
: The authors declare that they have no competing interests.
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