Bidirectional Mendelian Randomization Analysis for Vitamin D and Thyroid Peroxidase Antibody. - Chen, Yingchao; Han, Bing; Zhu, Chunfang; Li, Qin; Chen, Chi; Zhai, Hualing; Wang, Ningjian; Chen, Yi; Lu, Yingli (International Journal of Endocrinology, 2022)