1Kyoko Tsukiyama-Kohara,Michinori Kohara,Kenjiro Yamaguchi,Noboru Maki,Ayumi Toyoshima,Keizaburo Miki,Satoshi Tanaka,Nobu Hattori,Akio Nomoto. A second group of hepatitis C viruses[J] 1991,Virus Genes(3):243~254
3Okamoto H,et al.Fullength Seguemces of Hepatits C Virus Genome Having Poor Homology to Reported Isolates Comparative Study of Four Distinct Genotypes.Virology,1992;188:331.