Health-related quality of life and its influencing factors in Chinese with knee osteoarthritis. - Xie, Yue; Yu, Yong; Wang, Jing-Xuan; Yang, Xue; Zhao, Fei; Ma, Jian-Qiao; Chen, Zhi-Yu; Liang, Fan-rong; Zhao, Ling; Cai, Ding-jun; Yang, Chun-Xia (Quality of Life Research, 2020)