Hien, Phan Thi
Thoi, Vu Huu
Ha, Nguyen Thu
Kalach, Nicolas
Article History
Received: 9 February 2020
Revised: 7 April 2020
Accepted: 3 February 2021
First Online: 28 May 2021
Ethics
: <i>Ethics clearance</i>: Research Institute of Child Health of Vietnam National Children’s Hospital; No. 113/QB-BVNTU, dated: September 16, 2016.
: <i>Competing interest</i>: None stated.