Cipriano Jr, G., Bernardelli, G. F., Arena, R., Oliveira, L. V. F., Valdez, F. and Rodrigues Branco, J. N. (2015) “Cardio-respiratory responses of the 6-minute walk test in patients with refractory heart failure during the preoperative period for heart transplant surgery”, Monaldi Archives for Chest Disease, 74(2). doi: 10.4081/monaldi.2010.269.