Epidemiologic methods [electronic resource] : studying the occurrence of illness / Thomas D. Koepsell, Noel S. Weiss. Koepsell, Thomas D. Weiss, Noel S., 1941- Epidemiology Methodology. RA652.4 614.4 22 Includes bibliographical references and index. Description based on print version record. This is an introduction to the basic concepts and practical tools of epidemiologic research. This book offers descriptions of key concepts and examples illustrating how these concepts are applied. Some examples are drawn from classic studies in the field. New York ; Oxford : Oxford University Press, 2003. 2003. 2003 Text 1 online resource (ix, 513 p.) : http://dx.doi.org/10.1093/acprof:oso/9780195150780.001.0001 eng