Johansson, Christer, Dan Mellström, Klas Rosengren, and Åke Rundgren. “Prevalence of Vertebral Fractures in 85-Year-Olds: Radiographic Examination of 462 Subjects”. Acta Orthopaedica 64, no. 1 (January 1, 1993): 25–27. Accessed May 17, 2026. https://actaorthop.org/actao/article/view/21687.