The mediating role of sleep quality in the relationship between dispositional mindfulness and fatigue in Chinese nurses during the COVID-19 pandemic oleh Caijun Dai, Pinglang Hu, Feifan Yan, Xuejiao He, Weizhen Cheng, Lihua Yu, Achang Fang, Xiaoling Meng, Meiyang Lou, Youying Chen, Danli Chi, Huasu Zhou, Qiaoge Chen, Zhenhong Fang, Shuhong Ni, Qiqi Huang