1. Centers for Disease Control (1984): Recommendations for the protection against viral hepatitis. MMWR. 34.
2. Centers for Disease Control (1987): Recommendations for the protection against viral hepatitis. MMWR. 36.
3. Centers for Disease Control (1989): Recommendations and reports: Guidelines for prevention of transmission of human immunodeficiency virus and hepatitis B virus to health care and public safety workers. MMWR 38 / No. S-6.