title: Increase in unsafe homosexual behaviour.
authors.forename: J A
authors.initials: JA
authors.lastname: van den Hoek
authors.forename: G J
authors.initials: GJ
authors.lastname: van Griensven
authors.forename: R A
authors.initials: RA
authors.lastname: Coutinho
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000635:transmission*; D001727:Bisexuality; D005069:Evaluation Studies as Topic; D005260:Female; D006069:Gonorrhea / Q000453:epidemiology; D006716:Homosexuality / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D009426:Netherlands / Q000453:epidemiology; D013587:Syphilis / Q000453:epidemiology