1. Hepatitis B and hepatitis C in emergency department patients;Kelen;N Engl J Med,1992
2. Mortality attributable to HIV infections/AIDS—United States, 1981–1990;MMWR,1991
3. The HIV/AIDS epidemic: the first 10 years;MMWR,1991
4. Harrison's Textbook of internal medicine,1991
5. Protection against viral hepatitis: recommendations of the immunization practices advisory committee (ACIP);MMWR,1990