Nguyen VTG, Nguyen TNM, Nguyen LNG, Nguyen VD. STUDY ON THE SITUATION OF EXPANDED VACCINATION IN 2-YEAR-OLD CHILDREN AND MOTHERS’ KNOWLEDGE ABOUT EXPANDED VACCINATION IN GO CONG TAY DISTRICT, TIEN GIANG PROVINCE IN 2021. ctump. 2022;(4):115-123. doi:10.58490/ctump.2022i4.480