9U.S Department of Health and Human Services Public Health Service.Biosafety in Microbiological and Biomedical Laboratories [ M ]. 3rd Edition. CDC/NIH. 1993. 1-5.
10Centers for Disease Control. 1988 agent summary statement for human immunodeficiency virus and report on laboratory-acquired infection with human immunodeficiency virus [J]. MMWR 37 (Suppl4): 1988. 1.