Received: 2 December 2020
Accepted: 26 April 2021
First Online: 15 June 2021
: The study conducted is in accordance with the Declaration of Helsinki guideline. Ethic approvals were obtained from the Human Research Ethics Committee (HREC) of the University of Sydney, application reference number 2017/736 and Bach Mai Hospital, Vietnam, decision number 2381 QD/BM. A written inform consent was obtained from all interviewees before every interview.
: Study participants consented for the use of quotes with de-identified information for publication.
: The authors declare no competing interests.