Effects of α-tocopherol and β-carotene supplementation on cancer incidence and mortality: 18-Year postintervention follow-up of the Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study
作者单位:Department of Oncology, Helsinki University Central Hospital, Helsinki, Finland[1]Department of Chronic Disease Prevention, National Institute for Health and Welfare, P.O.Box 30, FI[2]Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, United States[3]