title: Drug use linked to risky behaviors in U.K. MSM.
mesh_terms: D000293:Adolescent; D000328:Adult; D015658:HIV Infections / Q000523:psychology*; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D008875:Middle Aged; D012309:Risk-Taking; D019966:Substance-Related Disorders; D006113:United Kingdom; D047568:Unsafe Sex; D055815:Young Adult