Epoetin alfa maintains ribavirin dose in HCV-infected patients: a prospective, double-blind, randomized controlled study1 1The other PROACTIVE Study Group investigators included the following: Vijayan Balan, M.D., Mayo Clinic Scottsdale, Scottsdale, Arizona; Norbert Bräu, M.D., Bronx VA Medical Center, Bronx, New York; Robert Brown, M.D., M.P.H., NY Presbyterian Medical Center, New York, New York; William Carey, M.D., Cleveland Clinic Foundation, Cleveland, Ohio; Andrea Duchini, M.D., Baylor College of Medicine, Houston, Texas; Greg Everson, M.D., University of Colorado Health Sciences Center, Denver, Colorado; Michael Fried, M.D., University of North Carolina, Chapel Hill, North Carolina; Robert Gish, M.D., California Pacific Medical Center, San Francisco, California; Ira Jacobson, M.D., Weill Medical College of Cornell University, New York, New York; John W. King, LSU Health Sciences Center, Shreveport, LA; Raymond Koff, M.D., University of Massachusetts Memorial Health Care, Worcester, Massachusetts; William Lee, M.D., University of Texas Southwestern Medical Center, Dallas, Texas; Mark A. Levstik, M.D., The University of Tennessee, Memphis, Tennessee; John G. McHutchison, M.D., Scripps Clinic, La Jolla, California; Marion Peters, M.D., University of California San Francisco, San Francisco, California; Kenneth Sherman, M.D., Ph.D., University of Cincinnati College of Medicine, Cincinnati, Ohio; Coleman Smith, M.D., Minnesota Clinical Research Center, St. Paul, MN; Ronald Wasserman, M.D., Hepatitis Resource Center, Walnut Creek, California.