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JOURNAL OF

VASCULAR SURGERY Copyright © 2001 by The Socieg~for Vascular Surgery and The American Association fbr Vascular Surgery

EDITOR-IN-CHIEF

SENIOR EDITOR

K. Wayne Johnston, Toronto

Robert B. Rutherford, Colorado

ASSOCIATE EDITORS Jack L. Cronenwett, Lebanon, NH N o r m a n R. Hertzer, Cleveland J o h n M. Porter, Portland EDITORIAL B O A R D

Joseph P. Archie, Jr, Raleigh, NC John Blebea, Hershey, PA David C. Brewster, Boston Jacob Buth, Eindhoven (The Netherlands) Richard P. Cambria, Boston Elliot L. Chaikof, Atlanta Michael C. Dalsing, Indianapolis, IN Magruder C. Donaldson, Boston Mark F. Fillinger, Lebanon, N H Bruce L. Gewertz, Chicago Peter Gloviczld, Rochester, MN Michael A. Golden, Philadelphia Mitchell H. Goldman, Knoxville, TN Howard P. Greisler, Maywood, IL K. Craig Kent, New York Ted. R. Kohler, Seattle Peter F. Lawrence, Irvine, CA

James May, Sidney (Australia) James O. Menzoian, Boston Joseph L. Mills, Sr, Tucson Gregory L. Moneta, Portland Kenneth Ouriel, Cleveland Frank T. Padberg, Newark, NJ Bruce A. Perler, Baltimore Janet T. Powell, Coventry & Warwick (UK) W. J. Quinones-Baldrich, Los Angeles John J. Ricotta, Stony Brook NY James M. Seeger, Gainesville, FL Anton N. Sidawy, Washington, DC Bauer E. Sumpio, New Haven, CT Lloyd M. Taylor, Jr, Portland R. James Valentine, Dallas, TX Frank J. Veith, New York Thomas W. Wakefield, Ann Arbor

F O U N D I N G EDITOR

Michael E. DeBakey EDITORS EMERITUS

Calvin B. Ernst J a m e s C. Stanley

D. Emerick Szilagyi Jesse E. T h o m p s o n

Official Publication The Society for Vascular Surgery The American Association for Vascular Surgery

Volume 33 200i MOSBY, INC St Louis, Missouri