Thitisakulchai, P.; Siriussawakul, A.; Jarungjitaree, S.; Sangarunakul, N.; Dajpratham, P. Predicting Functional Decline in Geriatric Abdominal Surgery Patients: Unveiling Incidence, Risk Factors, and Innovative Predictive Models in Thailand. Siriraj Med J 2025, 77, 392-402.