[Etiological study on chronic and post-transfusion hepatitis].
D002908:Chronic Disease; D006505:Hepatitis / Q000209:etiology*; D006509:Hepatitis B / Q000209:etiology*; D006510:Hepatitis B Antibodies / Q000032:analysis*; D006512:Hepatitis B Core Antigens / Q000276:immunology*; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans; D065227:Transfusion Reaction
D006510:Hepatitis B Antibodies; D006512:Hepatitis B Core Antigens; D006514:Hepatitis B Surface Antigens