Funding for this research was provided by:
Amway Corporation (Unrestricted gift through the Nutrilite Health Institute Wellness Fund)
National Heart, Lung, and Blood Institute (NIH 5 T32 HL007034-43)
Received: 17 July 2019
Accepted: 13 January 2020
First Online: 3 February 2020
Ethics approval and consent to participate
: All procedures performed were in accordance with the ethical standards of the Institutional Review Boards of Stanford University and FJU (IRB # C104031) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Written informed consent was obtained from all individuals included in the study.
: Not applicable.
: The authors declare that they have no competing interests.