Ryden, Patcharin, and Monrudee Maungrung. “In-hospital, Thirty-day, One-year Mortality and Risk Factors of Mortality in the Elderly After Hip Fracture Surgery”. Srinagarind Medical Journal 36, no. 6 (December 29, 2021): 744–754. accessed December 9, 2025. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/253396.