Snoek, E.M. van der

infection study hiv infection group treatment patient cohort visit number incidence rotterdam partner participant clinic therapy month behaviour light prevalence hiv-positive fl uence rate amsterdam haart anal sex increase group i severity rotterdam cohort study gonorrhoea netherland hiv infections group ii syphili disease table cancer rectal uence hiv /aids threat photodynamic therapy knowledge hepatitis testing illumination hiv-negative intercourse 6 months erasmus mc hiv incidence result std clinic health anal cancer lesion uorescence susceptibility mthpc belief chlamydial dutch response chlamydia hpv types photodynamic applicator haart availability specimen hiv-positive men threat factor population amsterdam sti clinic behavioural antiretroviral therapy department availability papillomavirus infection anal intercourse chlamydial infections erasmu