Funding for this research was provided by:
National Institute on Aging (AG019783-14)
Received: 22 January 2019
Accepted: 19 February 2020
First Online: 2 March 2020
Ethics approval and consent to participate
: The Dartmouth Committee for the Protection of Human Subjects (#00024060) and the Kaiser Permanente Colorado Institutional Review Board (CO-12-1734) approved this research.
: Not applicable.
: The authors declare that they have no competing interests.