Development and validation of a primary sclerosing cholangitis-specific patient-reported outcomes instrument: The PSC PRO.Primary sclerosing cholangitis (PSC) is a chronic liver disease associated with inflammation and biliary fibrosis that leads to cholangitis, cirrhosis, and impaired quality of life.  Test-retest reliability was assessed in a subgroup of patients who repeated the PSC PRO after the first administration. 
The PSC PRO