Funding for this research was provided by:
National Institutes of Health (DP3 DK106917-01)
Received: 21 January 2020
Accepted: 15 March 2020
First Online: 5 April 2020
Ethics approval and consent to participate
: Ethical approval was obtained at each center separately and in George Washington University, The Biostatistics Center. All participants consent to participate in the study.
: Not applicable, our manuscript does not contain any individual person’s data in any form.
: The authors declare that there is no competing interest associated with this manuscript.