Nhung, Le Hong http://orcid.org/0000-0002-6048-6570
Kien, Vu Duy http://orcid.org/0000-0002-4333-8912
Lan, Nguyen Phuong
Cuong, Pham Viet http://orcid.org/0000-0002-2309-8253
Thanh, Pham Quoc http://orcid.org/0000-0002-5526-1510
Dien, Tran Minh http://orcid.org/0000-0003-4012-764X
Article History
Received: 15 July 2021
Accepted: 18 November 2021
First Online: 9 December 2021
Declarations
:
: The study proposal was approved by research ethics committees at the Hanoi University of Public Health (261/2020/YTCC-HD3) and the Vietnam National Children’s Hospital (883/BVNTW-VNCSKKTE). The study was conducted in accordance with relevant guidelines and regulations. Informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.