ASSOCIATION BETWEEN CHRONIC DISEASE AND SLEEP QUALITY AND DURATION AMONG 18-59-YEAR-OLD ADULTS IN SOUTHERN CHINA: Yanyan Wu1, Yucai Zhang3, Yafei Wu4, Liying Fu1, Xiao Wu1, Lingling Huang5, Xiaoxiao Wang6, Bingbing Li1, Zhenzhen Su1, Bo Li 1 and Peixi Wang1,2. SEATROPH 2020, 50 (5), 912-924.