Funding for this research was provided by:
National Yang-Ming University (Taipei Veterans General Hospital—National Yang-Ming University Excellent Physician Scientists Cultivation Program)
National Heart, Lung, and Blood Institute (HL103836, HL135849, HL135849)
Received: 17 October 2018
Accepted: 7 January 2019
First Online: 18 January 2019
Ethics approval and consent to participate
: The prospective study was approved by Vanderbilt Institutional Review Board (IRB #051065). Informed consent was obtained for sample collection from the patients or surrogates whenever possible; if patients or surrogates were unable to provide consent, the institutional review board granted a waiver of consent due to the minimal risk nature of the study.
: not applicable
: The authors declare they have no competing interests.
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