Dung, Luu Phuong
Hai, Pham Thanh
Hoa, Luong Minh
Mai, Tran Ngoc Phuong
Hanh, Nguyen Thi My
Than, Phan Dang
Tran, Van Dinh
Quyet, Nguyen Tu
Hai, Hoang
Ngoc, Do Bich
Thu, Nguyen Thị
Mai, Le Thi Phuong
Article History
Received: 28 January 2022
Accepted: 17 June 2022
First Online: 29 June 2022
Declarations
:
: The research protocol was approved by the Institutional Ethics Committee of the National Institute of Hygiene and Epidemiology, Hanoi, Vietnam. Written informed consent was obtained from all study participants. If a participant is less than 18 years old, informed consent was obtained from a parent/guardian. And all research methods were performed in accordance with the relevant guidelines and regulations.
: All authors have reviewed the manuscript and agreed to publish.
: The authors declare no competing interests.