RT Journal Article SR Electronic T1 NOSA in HCV infection: markers or makers of disease? JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 328 OP 329 DO 10.1136/gut.45.3.328 VO 45 IS 3 A1 VERGANI, D YR 1999 UL http://gut.bmj.com/content/45/3/328.abstract AB