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Title
Farm visits and undercooked hamburgers as major risk factors for sporadic Escherichia coli O157:H7 infection: data from a case-control study in 5 FoodNet sites.
Authors
Kassenborg HD; Hedberg CW; Hoekstra M; Evans MC; Chin AE; Marcus R; Vugia DJ; Smith K; Ahuja SD; Slutsker L; Griffin PM
Publication
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2004, Vol 38 Suppl 3, pS271