Gutiérrez-Ballesteros, G.; Mesa-Rubio, D.; Martín-Hidalgo, M.; Fernández-Cabeza, J.; Aristizábal-Duque, C. Mitral Insufficiency of Unusual Etiology. Rev Ecocardiogr Pract Otras Tec Imag Card (RETIC) 2017, 41-44.