2H Okamoto, F Tsuda, H Sakugawa, et al.Typing hepatitis B virus by homology in nucleotide sequence : comparison of surface antigen subtypes. Journal of General Virology, 1988, 69: 2575 - 83 .
3H Norder, AM Courouce, and L0 Magnius.Complete genomes, phylogenetic relatedness, and structrual proteins of six strains of the hepatitis B virus, four of which represent two new genotypes.Virology, Feb1994, 198:489-503.
4L Styyver, S De Gendt, C Van Geyt, et al.A new genotype of hepatitis B virus: complete genome and phylogenetic relatedness.J.Gen.Virol., 2000, 81:67-74.
5P Arauv-Ruiz, H Norder, BH Rohertson, etal.Genotype H: a new Amerindian genotype of hepatitis B virus revealed in Central A merica.J.Gen.Virol., Aug2002, 83 : 2059 - 73.
8Ding X, Mizokami M, Yao G, et al.Hepatitis B virus genotype distribution among chronic hepatitis B virus carriers in Shanghai, China.Intervirolcgy, 2001, 44 (1): 43-47.
10Lindh M, Hannoun C, Dhillon AP, et al.Core promoter mutations and genotypes in relation to viral replication and liver damage in East Asian hepatites B virusc arriers.J Infect Dis, 1999, 179; 775- 782.
9Arauz-Ruiz P,Norder H,Robertson BH, et al. C.enotype H: a new Amerindian genotype of hepatitis B virus revealed in Central America [J].J C.en Virol.2002,83(Pt 8) : 2059-2073.
10Huy TT,Ushijima H,Quang VX,et al. C, enotype C of hepatitis B viruscan be classified into at least two subgroups [J] .J Gen Virol,2004,85(Pt 2) : 283-292.