7Balayan M S, Andjaparidze A G, Savinskaya S S, et al. Evidence for a virus in non-A, non-B hepatitis transmitted via the fecal-oral route [ J ]. Intervirology, 1983, 20 ( 1 ) : 23 - 31.
8Zhuang H, Cao X Y, Liu C B, et al. Epidemiology of hepatitis E in China[J]. Gastroenterol Jpn, 1991, 26(Suppl 3) : 135 -138.
9World Health Organization. Hepatitis E [ R ]. Geneva: World Health Organization, 2010.