ADVISORY COMM; AMERICAN COLLEGE OF CARDIOLOGY; AMERICAN HEART JOURNAL; ASTRUP GROUP; BRITISH MEDICAL JOURNAL; CONFERENCE ON THE DECLINE IN CORONARY HE; CONGRESSIONAL COMM; ECONOMICS STATISTICS + COOPERATIVES SERV; HARVARD; HEW, DEPT OF HEALTH EDUCATION AND WELFARE; JOURNAL OF THE AMERICAN MEDICAL ASSN; MAYO CLINIC; NATL CENTER FOR HEALTH STATISTICS; NATL HEART LUNG + BLOOD INST; NIH, NATL INST OF HEALTH; NY ACADEMY OF SCIENCES; OSLO STUDY GROUP; SCIENCE; SPECIAL INTERVENTION GROUP; TUFTS UNIV; US PUBLIC HEALTH SERVICE; USDA, U.S. DEPT OF AGRICULTURE; USUAL CARE GROUP