Technician Leone Coppola, right, conducts a test of Walter Sullivan at the Framingham, Mass., clinic on April 7, 1952. (Frank C. Curtin / Associated Press)
Attorney Walter F. Sullivan, one of the participants in the heart clinic in Framingham, Mass., is tested by technician John W. Claffey on April 7, 1952. The machine measures the thrust of blood through vessels with each heart beat. (Frank C. Curtin / Associated Press)
Dr. T. Royle Dawber, left, director of the clinic, goes over charts with Dr. Harold Osher on April 7, 1952. In Framingham, Mass., at that time, 6,600 of the town’s 28,000 people took part in the research. Framingham was chosen for the project because it had a stable population with urban and rural areas. (Frank C. Curtin / Associated Press)
Joseph Pavia, 84, and wife Lorraine, 82, shown eating dinner at home on Sept. 17, 1998, are participants in the Framingham Heart Study. (Julia Malakie / Associated Press)
