Dù đã tắt, smarphone hay máy tính bảng vẫn ảnh hưởng đến giấc ngủ của trẻ em
Nếu đặt thiết bị di động như smartphone hay máy tính bảng trong phòng ngủ sẽ ảnh hưởng đến giấc ngủ của trẻ em, kể cả máy đã được tắt nguồn. Đây là kết quả của một nghiên cứu mới công bố.
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