The associations of alcoholic liver disease and nonalcoholic fatty liver disease with bone mineral density and the mediation of serum 25-Hydroxyvitamin D: A bidirectional and two-step Mendelian randomization. - Huang, Qinyao; Guo, Jianglong; Zhao, Hongjun; Zheng, Yi; Zhang, Yuying (PLoS ONE, 2023)