AUTHOR=Lin Xiaobin , Yang Lin TITLE=Nonlinear relationship between serum Klotho and chronic kidney disease in US adults with metabolic syndrome JOURNAL=Frontiers in Endocrinology VOLUME=15 YEAR=2024 URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2024.1409560 DOI=10.3389/fendo.2024.1409560 ISSN=1664-2392