Centers for Disease Control and Prevention. A Comprehensive Immunization Strategy to Eliminate Transmission of Hepatitis B Virus Infection in the United States: Recommendations of the Advisory Committee on Immunization Practices (ACIP) Part II: Immunization of Adults. MMWR [Internet]. 2006 Dec 8 [cited 2013 Jan 22];55(RR–16). Available from: http://www.cdc.gov/mmwr/pdf/rr/rr5516.pdf