Received: 30 September 2022
Accepted: 9 January 2023
First Online: 16 January 2023
: The study was approved by the ethics committee of the Hospital of Tropical Diseases in Ho Chi Minh City (IORG007145) and the ethics committee of the Oxford Tropical Research, University of Oxford (OxTREC Reference: 549-18). All methods were carried out in accordance with relevant guidelines and regulations. Informed consent was obtained from all research participants. No participants involved in this study was under 16 years old.
: Not applicable. All data used in the manuscript are anonymised.
: The authors declare that they have no competing interests.