Saddleback Medical Research Services, San Diego, Calif; Principal Investigator (PI), Jorge Llorente, MD; Study Coordinator (SC) Beth Hamilton. University of New Mexico Hospital, Albuquerque; PIs, Donald E. Fry, MD, Don M. Morris, MD; SC, Ann Petrauskas. University of Oklahoma Health Sciences Center, Oklahoma City; PI, Russell G. Postier, MD; SC, Kathryn Wilkerson. University of Washington School of Medicine, Seattle; PIs, E. Patchen Dellinger, MD, Larry M. Gentilello, MD; SCs, Ella Mae Kurashige, Tricia Spach, Kathy Hare. Vanderbilt University Medical Center, Nashville, Tenn; PI, William O. Richards, MD. University of South Florida, Tampa; PI, James Norman, MD; SC, Connie Farrell. Tampa General Hospital, Tampa, Fla; PI, Alexander S. Rosemurgy, MD; SC, Kevin Dillon. Longmont United Hospital, Longmont, Colo: PI, Kevin Berg, MD; SC, Brenda Sadler. Providence General Medical Center, Everett, Wash; PI, Edward A. Vaughn, MD; SC, Rafael Veintimilla. Cooper Hospital, Camden, NJ; PI, Louis Flancbaum, MD. University of Cincinnati Medical Center, Cincinnati, Ohio; PI, Fred A. Luchette, MD; SC, Carol Hill-Gulick. Beth Israel-Deaconess Hospital, Boston Mass; PI, Timothy J. Babineau, MD; SC, Jennifer Stack. Medical College of Wisconsin-Affiliated Hospitals, Milwaukee; PI, Robert Condon, MD; SC, Cristine Clay. Creighton University Medical Center, Omaha, Neb; PI, Robert J. Fitzgibbons, MD; SC, Chris Destache. University of South Alabama Medical Center, Mobile; PI, J. Raymond Fletcher, MD; SC, Theresa Wright. Hospital of the University of Pennsylvania, Philadelphia; PI, C. William Hanson, MD; SC, Heather Steinberger. University of Florida College of Medicine, Gainesville; PIs, Stephen B. Vogel, MD, Richard Howard, MD, Michael P. Hocking, MD; SCs, Robbie Stringfellow, Greg Drexler. Rochester General Hospital, Rochester, NY; PI, David Kaufman, MD; SC, Doris Coleman. University of Tennessee College of Medicine, Memphis; PI, Guy R. Voeller, MD; SC, Freida Hatmaker. University of Louisville School of Medicine, Louisville, Ky; PI, Susan Galandiuk, MD; SC, Susan Clayton. Tulane University School of Medicine, New Orleans, La; PI, Ronald L. Nichols. MD; SC, Jeffrey Smith. University of Massachusetts Medical Center, Worcester; PI, Stephen Heard, MD. Hennepin County Medical Center, Minneapolis, Minn; PI, Michael West, MD; SC, Jon Jancik. Washington Hospital Center, Wash, DC; PI, John Kirkpatrick, MD; SC, Marla Davis. Palm Beach Research Center, West Palm Beach, Fla; PI, Barry Miskin, MD; SC, Bonita Bender. Spartanburg Regional Medical Center, Spartanburg, SC; PIs, Charles B. Hanna, MD, Thomas Ashley; University of North Dakota United Hospital, Grand Forks; PI, David R. Antonenko, MD; SC, Julie Anderson. Southeastern Clinical Research, Maitland, Fla; PI, Frank Campisi, MD; SC, Lynn Hollenbach. Loyola University Medical Center, Maywood, Ill; PI, David J. Dries, MD; SC, Vicki McGill. MDVA Medical Center, Houston, Tex; PI, Thomas V. Taylor, MD; SC, Mary Beth Lengyel. Future Healthcare Research Center, Philadelphia, Pa; PI, Richard Greenberg, MD; SC, Kathy Kelly. Carl T. Hayden VA Medical Center, Phoenix, Ariz; PI, William Dolan, MD; SC, Linda Gilbert. Medical Center of Delaware, Newark; PI, Gerard Fuldam, MD; SC Dalva Hailstone. Advanced Clinical Research Institute, Anaheim, Calif; PI, Miguel Velez, MD; SC, Millie Riff. The Medical College of Georgia, Augusta; PI, Robert Martindale, MD; SC, Mary Anne Park. University of California Irvine Medical Center, Irvine; PI, Russell Williams, MD; SC, Judy Hopkins.