Anti-Bacterial Agents--therapeutic use Antibodies, Antineutrophil Cytoplasmic--analysis Anticholesteremic Agents--therapeutic use Antipruritics--therapeutic use Autoimmune Diseases--complications Bile Ducts--pathology Cholagogues and Choleretics--therapeutic use Cholangiography Cholangitis--complications Cholangitis, Sclerosing--complications Cholestasis--diagnosis Cholestyramine Resin--therapeutic use Clinical Enzyme Tests Diagnosis, Differential Hepatitis, Autoimmune--complications Humans Immunosuppression Therapy Inflammatory Bowel Diseases--complications Liver Cirrhosis--etiology Liver Cirrhosis, Biliary--diagnosis Liver Transplantation Naloxone--therapeutic use Naltrexone--therapeutic use Narcotic Antagonists--therapeutic use Ondansetron--therapeutic use Plasmapheresis Ursodeoxycholic Acid--therapeutic use