Hepatitis B in the school environment.
D000349:Africa / Q000208:ethnology; D001208:Asia / Q000208:ethnology; D002648:Child; D002681:China / Q000208:ethnology; D006509:Hepatitis B / Q000276:immunology / Q000635:transmission*; D006514:Hepatitis B Surface Antigens / Q000032:analysis; D006801:Humans; D012574:Schools; D012606:Scotland
D006514:Hepatitis B Surface Antigens