Funding for this research was provided by:
National Heart, Lung, and Blood Institute (HL122658)
National Institute of Neurological Disorders and Stroke (NS087541)
Received: 12 May 2020
Accepted: 17 August 2020
First Online: 26 August 2020
Ethics approval and consent to participate
: Written informed consent was obtained from participant at each examination and all study protocols were approved by the institutional review boards of the University of Texas Health Science Center at Houston, the University of Alabama at Birmingham, the University of Minnesota, Northwestern University, and the Kaiser Permanente Division of Research.
: Not applicable.
: The authors declare that they have no competing interests.