Nguyen, Thi Hoang Trang
Vu, Van Tam
Nguyen, Vu Quoc Huy
Article History
Received: 22 December 2022
Accepted: 11 April 2023
First Online: 28 April 2023
Declarations
:
: The research proposal was approved by the Ethical Council in Biomedical Research of Hue University of Medicine and Pharmacy, Vietnam (Ethics Committee ID number H2020/035) and the Scientific Council of Haiphong Hospital of Obstetrics and Gynecology, Vietnam (IEC, 1186/QD-BVPSHP). All methods were carried out in accordance with relevant guidelines and regulations. All participants voluntarily signed a written informed consent form after hearing a full explanation of the purpose of this study.
: Not applicable.
: The authors declare that they have no competing interests.