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2. Enterically transmitted non-A, non-B hepatitis;Bradley;Br Med Bull,1990
3. Hepatitis E virus;Zuckermann;Br Med J,1990
4. Hepatitis E: enterically transmitted non-A, non-B hepatitis;Khuroo;Indian J Gastroenterol,1991
5. Infectious hepatitis in Delhi (1955-56): a critical study: epidemiolology;Vishwanathan;Indian J Med Res,1957