Lê, T. T. X.; Tạ, T. K. N.; Phạm, T. Q.; Nguyễn, T. N. THE PREVALENCE OF ADVERSE EVENTS FOLLOWING IMMUNIZATION OF THE 2ND DOSE OF VERO CELL (SINOPHARM) COVID-19 VACCINE AMONG PEOPLE VACCINATED AT THE VACCINATION SITE OF HANOI MEDICAL UNIVERSITY AND SOME RELATED FACTORS, 2021-2022. VMJ 2024, 540.