Radiation Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland 20892-7362 [A. V. B., M. S. L., P. D. I.]; Division of Neurosurgery, Western Pennsylvania Hospital, Pittsburgh, Pennsylvania [R. G. S.]; Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona [W. R. S.]; Brigham and Women’s Hospital, Bosto...

Epidemiology is the study of how often diseases occur in different groups of people and why.1 Cancer epidemiology is therefore the study of how often cancer occurs in different groups and why. Part of the work on examining why is to measure the effect of factors which may put a patient at high risk of getting the type of cancer in question. The first section of this review looks at epidemiologi...

1 Department of Epidemiology & Bio-statistics, Chittaranjan National Cancer Institute, Calcutta, India. 2 Health Services Research, St. Louis University School of Public Health, St. Louis, MO 63108 Address for Correspondence: Dr. Urmi Sen, Department of Epidemiology and Biostatistics, Chittaranjan National Cancer Institute 37, S.P. Mukherjee Road, Calcutta 700026, Fax: 91-33-475 7606, e-mail: u...

1. Cancer Epidemiology Group, Centre for Epidemiology and Biostatistics, The University of Leeds, Arthington House, Cookridge Hospital, Leeds LS16 6QB, UK 2. Pathology & Tumour Biology, Leeds Institute for Molecular Medicine, Level 4 Wellcome Brenner Building, University of Leeds, St James’s University Hospital, Beckett Street Leeds, LS9 7TF, UK 3. Northern & Yorkshire Cancer Registry and Infor...

Medical Department, and Clinical Biochemical Department, Viborg Regional Hospital, DK-8800 Viborg, Danish Cancer Society, Institute of Cancer Epidemiology, DK-2100 Copenhagen Department of Clinical Epidemiology, Aarhus University Hospital, DK-9100 Aalborg National Research Centre for the Working Environment, DK-2100 Copenhagen, National Food Institute, Technical University of Denmark, DK-2860 S...

Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio; Trinity College Dublin, Dublin, Ireland; Department of Anthropology, Pennsylvania State University, University Park, Pennsylvania; and Center for Clinical Epidemiology and Biostatistics, Department of Biostatistics and Epidemiology, and Abramson Cancer Center, University of Pennsylvania School...