SYPHILIS. THE ROLE OF THE HOMOSEXUAL.
D001003:Anal Canal; D002170:Canada; D006716:Homosexuality; D006801:Humans; D010336:Pathology; D013223:Statistics as Topic; D013587:Syphilis; D014481:United States
ANUS; CANADA; HOMOSEXUALITY; PATHOLOGY; STATISTICS; SYPHILIS; UNITED STATES