Funding for this research was provided by:
National Heart, Lung, and Blood Institute (U01HL146327, R01HL119255)
Received: 1 June 2020
Accepted: 23 August 2020
First Online: 4 September 2020
Ethics approval and consent to participate
: Individuals agreed to participate through an anonymous online information sheet that described the study procedures, risks, and benefits. The Institutional Review Board of the University of Southern California determined that the study procedures presented no more than minimal risk and approved it as exempt from full review.
: Not applicable.
: The authors declare that they have no competing interests.