Long-term risk of degenerative spinal diseases following osteoporosis: A South Korean nationwide cohort study - Handol Jung; Shin Won Kwon; Hyung Jin Shin; Sunho Kim; Chanhee Shin; Taekyung Jin; Hohyun Jung; Youngoh Bae; Sung Hwan Hwang (Journal of Back and Musculoskeletal Rehabilitation, 2026)