title: Because it's there.
authors.forename: R L
authors.initials: RL
authors.lastname: Koretz
mesh_terms: D015658:HIV Infections / Q000150:complications*; D006509:Hepatitis B / Q000150:complications / Q000517:prevention & control*; D006801:Humans; D008297:Male; D012307:Risk Factors; D014611:Vaccination