[1] CHU PURPAN,SERV HEPATOGASTROENTEROL,TOULOUSE,FRANCE
[2] UNIV PADUA,IST SEMEIOT CHIRURG,I-35100 PADUA,ITALY
[3] ROYAL FREE HOSP,ACAD DEPT MED,LONDON,ENGLAND
[4] EMORY UNIV HOSP,DEPT SURG,ATLANTA,GA 30322
[5] UNIV ERLANGEN NURNBERG,MED KLIN,W-8520 ERLANGEN,GERMANY
[6] YALE UNIV,SCH MED,HEPAT HEMODYNAM LAB,NEW HAVEN,CT 06510
[7] HOSP CLIN BARCELONA,UNIDAD HEPATOL,BARCELONA 36,SPAIN
[8] KLINIKUM GROSSHADERN,MED KLIN 2,MUNICH,GERMANY
[9] KAROLINSKA INST,SODER HOSP,DEPT GEN SURG,S-10401 STOCKHOLM 60,SWEDEN
[10] HOP BEAUJON,UNITE RECH PHYSIOPATHOL SURG,CLICHY,FRANCE
[11] UNIV COPENHAGEN,HVIDOVRE HOSP,DEPT MED B233,DK-2650 HVIDOVRE,DENMARK
[12] UNIV PALERMO,OSPED V CERVELLO,IST CLIN MED R,I-90134 PALERMO,ITALY