Funding for this research was provided by:
National Heart, Lung, and Blood Institute (1R01HL117995-01A1)
Received: 21 July 2017
Accepted: 3 October 2017
First Online: 10 October 2017
Ethics approval and consent to participate
: This study is approved by the University of Arizona Human Subjects Protection Program (#1401185772). All participants are required to sign a consent form prior to participation and have the right to withdraw from the study at any time without any penalty or loss of benefits.
: Not applicable.
: The authors declare that they have no competing interests.
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