Received: 31 May 2021
Accepted: 28 July 2021
First Online: 4 August 2021
: The research was approved by the ethical board of the University of Medicine and Pharmacy at Ho Chi Minh City, number 146/HDDD-DHYD, on February 22nd 2021.
: All authors of this paper have read and approved the final version submitted.
: The authors declare that they have no competing interests.