6Spach DH,Silverstain FE,Stamm WE. Transmission of infection by gastrointestinal endoscopy and bronchosopy[J].Annals of Internal Medicine,1993.117-128.
7Ouzan D. Risk of transmission of hepatitis C through endoseopy of the digestive tract[J].Presse Medicale,1999,(20):1091-1094.
8Deflandre J,Cajot O,Brixko C. Risk of transmission by hePatitis C of endoseopes utilized in gastroenierology hospital service[J].Revue Medicale de Liege,2001,(10):696.