Schop, W.A.

hbsag clinic anti-hbc hepatitis 1-0 infection risk factors women std clinic partner half year prevalence contact drug use university hospital rotterdam netherland factor number vaccination group month hbv markers hepatitis b study risk groups model country visitor hbsag positivity history hbv infection population individual disease virus rotterdam marker health 3 months hospital hbv infections university association hepatitis b vaccination std clinic attendants table std clinic population std clinics orogenital contact hbv prevalence positivity screening drug users lifetime analyses antigen 1-2 genitourinary medicine clinics hepatitis b virus department duynhoven 0-6 1.0 information 6 months sti.bmj.com transmission genitourin downloaded dutch 2876 visitors result group.bmj.com february group.bmj.com prevalence anti-hbe effect hbeag 1-8 heterosexual