[Frequency of seropositive syphilis in Norwegian seamen].
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009326:Naval Medicine; D009664:Norway; D013587:Syphilis / Q000453:epidemiology*; D013588:Syphilis Serodiagnosis
Hyppigheten av seropositiv syfilis blant norske sjøfolk.