SUSILO, R.; LEONAS, R.; HARAHAP, D. H. Symptom Duration and Age as Predictors of Early Pain Reduction After Balloon Kyphoplasty for Osteoporotic Vertebral Compression Fractures: A Retrospective Cohort Study in Indonesia. Sriwijaya Journal of Surgery, v. 9, n. 1, p. 76-91, 28 Jun. 2026.