Mermin J H, Griffin P M
Foodborne and Diarrheal Diseases Branch, Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA.
Am J Epidemiol. 1999 Oct 15;150(8):797-803; discussion 804-5. doi: 10.1093/oxfordjournals.aje.a010083.