The association between working hours and working type with non-alcoholic fatty liver disease: results from the NHANES 1999-2014 - Wang, Ruli; Wu, Ningxi; Qu, Huan; Zheng, Xiaowei; Zhang, Haoyang; Zhu, Lihong; Wang, Xiaolei; Yao, Xiaodie; Zhang, Le (Frontiers in Endocrinology, 2025)