Integrating the Hospital Frailty Risk Score into Explainable Machine Learning to Predict Mortality in Older Adults with Pneumonia: A Chilean Population-Based Study. - Concha-Cisternas Y; Guzmán-Muñoz E; Vásquez-Muñoz M; Troncoso-Pantoja C; Fernández-Huerta L; Olivares R; Garcia-Carrillo E; Molina-Marquez I; Leschot Gatica J; Yañez-Sepúlveda R (Diagnostics (Basel, Switzerland), 2026)