By implanting the ring as a first step, the valve is arranged in the correct elliptical shape, the leaflets are spatially redistributed, then the judgment on any other necessary surgical act is taken in the final shape of the valve.    
  Part of: Cirillo M (2020) Ring-first Mitral Valve Repair. Research Ideas and Outcomes 6: e62369. https://doi.org/10.3897/rio.6.e62369