Treatment Outcome / Catheterization / Echocardiography / Prospective studies / Humans / Europe / Female / Male / Registries / Mitral Valve Repair / Aged / Middle Aged / Public health systems and services research / Time Factors / Pilot Projects / Europe / Female / Male / Registries / Mitral Valve Repair / Aged / Middle Aged / Public health systems and services research / Time Factors / Pilot Projects