일교차 15℃에 호흡기·심혈관 '비상'...예방법은? / YTN YTN 0 9 10.07 23:24 https://www.youtube.com/watch?v=Z3zKCepjx_0 + 2 https://www.youtube.com/feeds/videos.xml?channel_id=UChlgI3UHCOnwUGzWz… + 2 일교차 15℃에 호흡기·심혈관 '비상'...예방법은? / YTN