Patient Characteristics and Mortality Trends Among Octogenarians With Heart Failure: A Real-World Analysis. - Garred CH; Elmegaard M; Christensen DM; Zahir Anjum D; Malmborg M; Fosbøl EL; Andersson C; Jhund P; McMurray JJ; Køber L; Petrie MC; Schou M (JACC. Advances, 2025)