Association between non-high-density lipoprotein cholesterol to high-density lipoprotein cholesterol ratio and serum thyroid function measures: Recent Findings from NHANES 2007–2012 and Mendelian randomization - Tan, Mo-Yao; Zhang, Ping; Wu, Shan; Zhu, Si-Xuan; Gao, Ming (Frontiers in Endocrinology, 2025)