Factors influencing the incidence of gonorrhoea and non-gonococcal urethritis in men in an industrial city.
D000328:Adult; D000367:Age Factors; D004739:England; D006069:Gonorrhea / Q000453:epidemiology*; D006716:Homosexuality; D006801:Humans; D008297:Male; D009790:Occupations; D044469:Racial Groups; D011477:Sex Work; D012725:Sexual Behavior; D013334:Students; D014526:Urethritis / Q000453:epidemiology*; D014852:Wales