Hellow guys, Welcome to my website, and you are watching "만성 폐쇄성 폐 질환, 날씨 더울수록 증상 악화" / YTN 사이언스. and this vIdeo is uploaded by YTN 사이언스 투데이 at 2021-09-07T01:33:15-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
