1. Bureau of Justice Statistics(US). Correctional populations in the United States, 1980-99 [cited 2001 Sept 5]. Available from: URL: http://www.ojp.usdoj.gov/bjs/
2. Bureau of Justice Statistics (US). Corrections Statistics: summary findings [cited 2001 Sept 5]. Available from: URL: http://www.ojp.usdoj.gov/bjs/
3. Correctional health care: a public health opportunity;Glaser;Ann Intern Med,1993
4. Summary of notifiable diseases, United States, 1999;MMWR Morb Mortal Wkly Rep,2001
5. Preventive Services Task Force (US),1996