'shift work' → designated as a second-class carcinogen!

'shift work' with a high incidence of sleep disorders → designated as a second-class carcinogen! #During THE Riz's time #sleep disorders #carcinogens 📌 Replay on the official home: https://tv.jtbc.co.kr/leeds 📌 #Streaming on TVing: https://tving.onelink.me/xHqC/1vihef6r