Hellow guys, Welcome to my website, and you are watching 보건의료 빅데이터 모아 국민건강 지킨다 / YTN 사이언스. and this vIdeo is uploaded by YTN 사이언스 투데이 at 2019-09-18T02:22:19-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
