Funding for this research was provided by:
Wellcome Trust (203905/Z/16/Z, 106680)
Received: 21 June 2022
Accepted: 23 August 2022
First Online: 3 September 2022
: Ethical approval was obtained from the local ethics committee at HTD in Ho Chi Minh City, Vietnam and Oxford Tropical Research Ethics Committee, Oxford, UK. Written informed consent was obtained from patients, or their relatives if the patient was unable to consent due to severity of illness. Participants < 18 years of age provided written assent in addition to written parental/guardian consent. All the steps/methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.