Mediating effects of meaning in life on the relationship between family care, depression, and quality of life in Chinese older adults oleh Jing-Jing Zhou, Jing-Jing Zhou, Yu Zhang, Qing-Zhuo Ren, Ting Li, Ting Li, Gui-Ding Lin, Min-Yi Liao, Shao-Hua Chen, Pei Tong, Yu-Lin Gao