title: [Follow-up studies on hepatitis B antigen positive families in Iriomote Island, Okinawa].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006509:Hepatitis B / Q000235:genetics*; D006511:Hepatitis B Antigens / Q000032:analysis*; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged
chemical_list: D006511:Hepatitis B Antigens