authors Zhou, Jinhui Chen, Chen Wang, Jun Kraus, Virginia Byers Lv, Yuebin Mao, Chen Shi, Xiaoming Li, Xinwei Gao, Xiang Wei, Yuan Ye, Lihong Liu, Sixin Ye, Jiaming Qiu, Yidan Zheng, Xulin
has subject area Aged, 80 and over East Asian People Frailty Humans Independent Living Leisure Activities Prospective Studies Risk Factors