Reviewer's report 
 The relation between plasma tyrosine concentration and fatigue in primary biliary cirrhosis and Title: 
primary sclerosing cholangitis 
 5  15 February 2005 Version: Date: 
 U Leuschner Reviewer: 
Reviewer's report: 
The manuscript has been markedly improved. All recommondations have been accepted and were 
included into the revised paper. 
One thing that remains unaccounted for, is why the authors did not send the questionaires 
concerning fatigue to the 73 healthy controls and patients with chronic hepatitis C but only to 18 
other healthy individuals. Nevertheless, the paper can be accepted for publication in the revised version. 
 Accept after discretionary revisions What next?: 
Reviewer's report 
 The relation between plasma tyrosine concentration and fatigue in primary biliary cirrhosis and Title: 
primary sclerosing cholangitis 
 5  15 February 2005 Version: Date: 
 U Leuschner Reviewer: 
Reviewer's report: 
The manuscript has been markedly improved. All recommondations have been accepted and were 
included into the revised paper. 
One thing that remains unaccounted for, is why the authors did not send the questionaires 
concerning fatigue to the 73 healthy controls and patients with chronic hepatitis C but only to 18 
other healthy individuals. Nevertheless, the paper can be accepted for publication in the revised version. 
 Accept after discretionary revisions What next?: 
Please review this paper.
user
Reviewer's report 
 The relation between plasma tyrosine concentration and fatigue in primary biliary cirrhosis and Title: 
primary sclerosing cholangitis 
 5  15 February 2005 Version: Date: 
 U Leuschner Reviewer: 
Reviewer's report: 
The manuscript has been markedly improved. All recommondations have been accepted and were 
included into the revised paper. 
One thing that remains unaccounted for, is why the authors did not send the questionaires 
concerning fatigue to the 73 healthy controls and patients with chronic hepatitis C but only to 18 
other healthy individuals. Nevertheless, the paper can be accepted for publication in the revised version. 
 Accept after discretionary revisions What next?: 
assistant