Cite

    Wes R. Pedersen et al.. “Balloon aortic valvuloplasty in high risk aortic stenosis patients with left ventricular ejection fractions <20%.” Catheterization and cardiovascular interventions, vol. 84, no. 5, n.d., pp. 824–831. http://access.bl.uk/ark:/81055/vdc_100024977265.0x00005c