ACVA ATLANTIC; AHF, AMERICAN HEALTH FOUNDATION; AMERICAN SOCIETY FOR PERSONNEL ADMINISTR; AUSTRALIAS NATL HEALTH + MEDICAL RESEARC; AUSTRIAN SOCIETY FOR OCCUPATIONAL MEDICI; BRITISH JOURNAL OF CANCER; CENTRE FOR PUBLIC CHOICE; FARM CREDIT SERVICES; GEORGE MASON UNIV; GERMAN CARDIAC CENTRE; GERMAN SOCIETY FOR OCCUPATIONAL MEDICINE; HARVARD; HEALTH AUTHORITIES; INTL AGENCY FOR RESEARCH ON CANCER WORKI; INTL GREEN CROSS OF SWITZERLAND; INTL SYMPOSIUM; LEE CHAMBERLAIN; NAS, NATL ACADEMY OF SCIENCES; NATL RESEARCH COUNCIL; NIH, NATL INST OF HEALTH; RESPONSE ANALYSIS; SEATTLE UNIV; SEMINAR ON MEDICAL PERSPECTIVES ON PASSI; TI OF AUSTRALIA; UCLA; UNIV OF GENEVA; US BUREAU OF NATL AFFAIRS; VICTORIAN ANTI CANCER COUNCIL; WESTERN AUSTRALIA OCCUPATIONAL HEALTH SA; WHO, WORLD HEALTH ORG