Nguyen Van, Luong
Le Van, Doan
Article History
Received: 6 April 2021
Accepted: 21 April 2021
First Online: 12 May 2021
Declarations
:
: The study has been approved by the Ethical Committee in Biomedical Research, 108 Military Central Hospital, Hanoi, Vietnam (Document No. 225/QD-V108). All patients in the study were asked for their consent, and they agreed to participate in the study. They were notified of their complete right to withdraw from the study at any time without threats or disadvantages.
: All patients provided informed written consent before inclusion in the study.
: The authors declare no competing interests.