Funding for this research was provided by:
National Health and Medical Research Council (Program Grant, Career Development Fellowship GNT1141441)
James Cook University (PhD Scholarship)
Received: 25 April 2019
Accepted: 27 June 2019
First Online: 3 July 2019
Ethics approval and consent to participate
: The present research was approved by the PNGIMR Institutional Review Board and the National Medical Research Advisory Committee of Papua New Guinea (Protocol number 18.10).
: Not applicable.
: The authors declare that they have no competing interests.