Bertaina, M., Galluzzo, A., D'Ascenzo, F., Conrotto, F., Grosso Marra, W., Frea, S., Alunni, G., Crimi, G., Moretti, C., Montefusco, A., D'Amico, M., Perl, L., Rinaldi, M., Giustetto, C., & De Ferrari, G. M. (2019). prognostic impact of MitraClip in patients with left ventricular dysfunction and functional mitral valve regurgitation: A comprehensive meta-analysis of RCTs and adjusted observational studies. International journal of cardiology, 290, 70–76. http://access.bl.uk/ark:/81055/vdc_100085409497.0x000053