By 1945, this operation had been performed on a total of three infants with pulmonary stenosis and pulmonary atresia. As Alfred Blalock and Helen Taussig wrote in "Journal of the American Medical Association", "Heretofore there has been no satisfactory treatment for pulmonary stenosis and pulmonary atresia. A “blue” baby with a malformed heart was considered beyond the reach of surgical aid. During the past three months we have operated on 3 children with severe degrees of pulmonary stenosis and each of the patients appears to be greatly benefited. In the second and third cases, in which there was deep persistent cyanosis, the cyanosis has greatly diminished or has disappeared and the general condition of the patients is proportionally improved." Following this report, and lectures given by Blalock and Taussig at conferences around Europe and America, the procedure quickly gained worldwide acceptance.