title: Repeated transfusions and serological markers of hepatitis A and hepatitis B.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006506:Hepatitis A / Q000276:immunology*; D006509:Hepatitis B / Q000276:immunology*; D006514:Hepatitis B Surface Antigens / Q000276:immunology; D006801:Humans; D007223:Infant; D008297:Male; D012846:Singapore; D065227:Transfusion Reaction
chemical_list: D006514:Hepatitis B Surface Antigens