[1] Cornell Univ, Weill Med Coll, New York Presbyterian Hosp, Ctr Study Hepatitis C, New York, NY USA
[2] Columbia Univ Coll Phys & Surg, New York Presbyterian Hosp, New York, NY 10032 USA
[3] Baptist Med Ctr, Kansas City, MO USA
[4] Beth Israel Deaconess Med Ctr, Boston, MA 02215 USA
[5] Indiana Univ, Sch Med, Indianapolis, IN 46204 USA
[6] Atlantic Gastroenterol Associates, Egg Harbor Township, NJ USA
[7] Austin Gastroenterol PA, Austin, TX USA
[8] Calif Pacific Med Ctr, Geraldine Brush Canc Res Inst, San Francisco, CA 94115 USA
[9] Indianapolis Gastroenterol RSCH, Indianapolis, IN USA
[10] Bach & Godofsky, Bradenton, FL USA
[11] NW Georgia Gastroenterol Associates PC, Marietta, GA USA
[12] N Shore Univ Hosp, Manhasset, NY USA
[13] Northwestern Univ, Feinberg Sch Med, Chicago, IL 60611 USA
[14] Kaiser Permanente, Sacramento, CA USA
[15] Schering Plough Res Inst, Kenilworth, NJ USA