Funding for this research was provided by:
Horizon 2020 Framework Programme (733174)
Received: 14 November 2020
Accepted: 3 May 2021
First Online: 19 May 2021
: Ethics approval was received from Pham Ngoc Thach Hospital Institutional Review Board in Ho Chi Minh City, Vietnam, on 30 August 2019 (number: 1773/HDDD-PNT). The interviewees were given/read information about the study and provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.