title: e Antigen among male homosexual patients.
mesh_terms: D006511:Hepatitis B Antigens / Q000032:analysis*; D006514:Hepatitis B Surface Antigens / Q000032:analysis; D006716:Homosexuality; D006801:Humans; D008297:Male
chemical_list: D006511:Hepatitis B Antigens; D006514:Hepatitis B Surface Antigens