preferred_name: Regurgitation degree &#x7C; Mitral valve &#x7C; Cardiac procedures
preferred_name_lc: regurgitation degree &#x7c; mitral valve &#x7c; cardiac procedures
label: Regurgitation degree &#x7C; Mitral valve &#x7C; Cardiac procedures
label_lc: regurgitation degree &#x7c; mitral valve &#x7c; cardiac procedures