4Riley L W,Remis R S,Helgerson S D et al.Hemorragic colitis associated with a rare Escherichia coli setotype.N Engl J Med,1983,308:681.
5Sowers E G,Wells J G, and Strockbine N A.Evaluation of Commercial Latex Reagents for Identification of O157 and H7 Antigens of Escherichia coli.J Clinical Micobiol.34(5):1286-1289.