2L.Simonsen et al. Unsafe injection in the developing world and transmission of bloodborne pathogens : a review. Bulletin of the world health organization, 1999,77 (10): 789-800.
3A. Kane, et al. Transmission of hepatitis B, hepatitis C, human immunodeficiency viruses through unsafe injection on the developing world:model-based regional estimales.Bulletin of the world health organization, 1999,77(10) :801-807.
4A. Bgttersby .sterilizable syrnges:excessive risk or costeffective option? Bulletin of the world health organization,1999,77(10) :812 - 819.