title: Importance of case definition in epidemiological studies.
authors: Center for Science, Technology, and Engineering, Applied Research and Methods, US Government Accountability Office, 441 G Street, NW, Washington, DC 20548, USA. sharmas @ gao.gov
authors: Sushil K
authors: SK
authors: Sharma
mesh_terms: D005260:Female; D047830:Gulf War; D006801:Humans; D008297:Male; D015233:Models, Statistical; D018923:Persian Gulf Syndrome / Q000453:epidemiology*; D011159:Population Surveillance / Q000379:methods*; D011795:Surveys and Questionnaires / Q000592:standards*; D014728:Veterans