In the late 1950s, atherosclerotic lesions in the arteries were intensely scrutinised at autopsy by the Committee on Vascular Lesions, a creative forum that became part of the American Heart Association in 1959. By the early 1980s, concerned efforts brought many medical subspecialties together to quantify treatments of atherosclerosis in the living, by comparing results and standardising on measurements and terms deployed. With improved understandings...