Carmona, J., Silva, A., Seabra-Gomes, R., Gouveia, R. and Guimarães, L.C. 1980. Value of echocardiography in the surgical selection of patients with chronic aortic insufficiency. Acta Médica Portuguesa. 2, 1 (Feb. 1980), 29–38. DOI:https://doi.org/10.20344/amp.4165.