“…6,7 His comprehensive 1941 publication on atrial septal defects improved the understanding of that disorder. 8 In 1946, he provided the first description of endomyocardial fibrosis in Africans based on his wartime observations. His careful analysis of 154 patients with left ventricular failure, delivered as the Strickland Goodall lecture in 1939, provided convincing evidence that the cause of pulmonary congestion was "backward failure," not "forward failure," as had been championed by James Mackenzie, Thomas Lewis, and others.…”