Hepatitis B antigen in prostitutes.
D000328:Adult; D000367:Age Factors; D005260:Female; D006115:Greece; D006511:Hepatitis B Antigens / Q000032:analysis*; D006801:Humans; D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D008875:Middle Aged; D011477:Sex Work; D013587:Syphilis / Q000453:epidemiology
D006511:Hepatitis B Antigens