Hellow guys, Welcome to my website, and you are watching 유아·어린이 스마트폰 과의존…뇌 발달·성장 위협 (2020.02.21/뉴스투데이/MBC). and this vIdeo is uploaded by MBCNEWS at 2020-02-20T17:06:17-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
