Chu, Michael W A; Ruel, Marc; Graeve, Allen; Gerdisch, Marc W; Damiano, Ralph J Jr; Smith, Robert L 2nd; Keeling, William Brent; Wait, Michael A; Hagberg, Robert C; Quinn, Reed D; Sethi, Gulshan K; Floridia, Rosario; Barreiro, Christopher J; Pruitt, Andrew L; Accola, Kevin D; Dagenais, Francois; Markowitz, Alan H; Ye, Jian; Sekela, Michael E; Tsuda, Ryan Y; Duncan, David A; Swistel, Daniel G; Harville, Lacy E 3rd; DeRose, Joseph J; Lehr, Eric J; Puskas, John D; PROACT Mitral Investigators