File:Knoke1.jpg

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Summary
This is taken from the Center for Disease Control's paper, "Hospitalizations for Unexplained Illnesses among U.S. Veterans of the Persian Gulf War," by James D. Knoke and Gregory C. Gray, Naval Health Research Center, San Diego, California, USA, http://www.cdc.gov/ncidod/eid/vol4no2/knoke.htm }}
 * Source=Originally from en.wikipedia; description page is/was here.
 * Date=2006-06-23 (original upload date)
 * Author=Original uploader was |Permission=PD-LAYOUT; PD-USGOV.
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Original upload log
(All user names refer to en.wikipedia)
 * 2006-06-23 02:24