Hải, N.T. , Đức N.Q. , Linh, V.K. and Tùng, Đào V. 2023. Situation and some factor related to sleep quality and signs of internet addiction of students at two high schools Le Quy Don and An Duong in Hai Phong in 2022. Vietnam Journal of Preventive Medicine. 33, 1 Phụ bản (Jun. 2023), 4. DOI:https://doi.org/10.51403/0868-2836/2023/970.