{Reference Type}: Comment {Title}: Progenitor cell involvement in cirrhotic human liver diseases: from controversy to consensus. {Author}: Roskams T; {Journal}: J Hepatol {Volume}: 39 {Issue}: 3 {Year}: Sep 2003 {Factor}: 30.083 {DOI}: 10.1016/s0168-8278(03)00333-7 {Abstract}: