Funding for this research was provided by:
National Heart, Lung, and Blood Institute (R01HL113382, T32HL007287)
Wellcome Trust (090219/Z/09/Z)
Received: 20 June 2019
Accepted: 14 October 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: This study was conducted in full compliance with the principles of good clinical practice and the ethical principles of the Declaration of Helsinki. The study protocol and related documents were approved by Sunpasitthiprasong Hospital Ethics Committee (039/2556), the Ethics Committee of the Faculty of Tropical Medicine of Mahidol University (MUTM2012-024-01), the University of Washington Division of Human Subjects (Institutional Review Board approval 42988), and the Oxford Tropical Research Ethics Committee of the University of Oxford (OXTREC172-12).
: Not applicable.
: The authors declare that they have no competing interests.