Nguyen, Khan Viet
Ho, Duc Viet
Le, Nhan Trong
Van Phan, Kiem
Heinämäki, Jyrki
Raal, Ain
Nguyen, Hoai Thi
Article History
Received: 20 February 2020
Accepted: 27 November 2020
First Online: 17 December 2020
Competing interests
: The authors declare no competing interests.