Nguyễn, T. P. O. ., Trần, Q. A. ., Lê, V. T. H. ., Đặng , Q. T. ., Bùi , V. T. ., Hoàng , T. T. H. ., & Chu , T. H. . (2023). EFFECT OF COMMUNICATION INTERVENTION TO IMPROVE KNOWLEDGE, ATTITUDE AND PRACTICE ABOUT HAND WASHING WITH SOAP FOR STUDENTS OF A PRIMARY SCHOOL IN HANOI IN 2020. Vietnam Medical Journal, 522(2). https://doi.org/10.51298/vmj.v522i2.4323