Serum potassium level is associated with serum neurofilament light chain in American adult population: a cross-sectional analysis of the 2013–2014 National Health and Nutrition Examination Survey - Kong, Yingming; Tai, Yanghao; Chen, Bin; Li, Chunzheng; Chen, Hao; Shi, Liang (Frontiers in Aging Neuroscience, 2025)