Isolated annuloplasty in elderly patients with secondary mitral valve regurgitation: short- and long-term outcomes with a less invasive approach. - Oezpeker UC; Hoefer D; Barbieri F; Gollmann-Tepekoeylue C; Johannes H; Clemens E; Suat E; Adel S; Sasa R; Mueller L; Grimm M; Bonaros N (Frontiers in cardiovascular medicine, 2023)