title: Hepatitis-associated antigen in V.D. clinic patients.
mesh_terms: D005260:Female; D006511:Hepatitis B Antigens; D006716:Homosexuality; D006801:Humans; D008297:Male; D011477:Sex Work; D012749:Sexually Transmitted Diseases; D012923:Social Class
chemical_list: D006511:Hepatitis B Antigens