AUTHOR=Lin Guo-Ji , Guo Shao-Han , Liang Jia-Qi , Gong Ya-Qin , Jin Jian , Li Chong , Lu Ke TITLE=U-Shaped association between apolipoprotein A1 and serum uric acid levels in patients with osteoporotic fractures: a cross-sectional study JOURNAL=Frontiers in Endocrinology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2025.1540879 DOI=10.3389/fendo.2025.1540879 ISSN=1664-2392