The risks of changing the rules for previously validated biomarkers and using the same patients several times. Response letter to Calès et al. Gastroenterol Clin Biol 2008;32:1050-60: "Evaluation and improvement of a reliable diagnosis of cirrhosis by blood tests".
Gastroentérologie clinique et biologique
Munteanu M, Ngo Y, Ratziu V, Poynard T
2009 Gastroenterol. Clin. Biol. Volume 33 Issue 5
FibroTest Reliability Independant Team vs. Biomarkers HCV Fibrosis Cirrhosis