title: Light and shade behind the opt-out system for the HIV screening.
authors.affiliation: Imperial College London, UK. Electronic address: r.ma@imperial.ac.uk.
authors.forename: Richard
authors.initials: R
authors.lastname: Ma
mesh_terms: D005260:Female; D015658:HIV Infections / Q000175:diagnosis*; D006293:Health Promotion; D006801:Humans; D008297:Male