Altarcha, George Khayrallah, Aksa Alina Joy, and Joseph Iglesias. “Nonlinear Relationship Between Serum 25-Hydroxyvitamin D and Glycemic Control Among US Adults: A Survey-Weighted Analysis of NHANES 2017–2018”. Journal of Endocrinology & Metabolism 16, no. 4 (January 1, 2026): 167–171. Accessed August 25, 2026. https://jem.elmerpub.com/jem/article/view/1658.