[1] Washington Univ, Dept Surg, 660 South Euclid,Campus Box 8109, St Louis, MO USA
[2] Accreditat Council Grad Med Educ, Chicago, IL USA
[3] Vanderbilt Univ, Med Ctr, Dept Surg, Nashville, TN USA
[4] Amer Board Surg, Philadelphia, PA USA
[5] Brigham & Womens Hosp, Dept Surg, 75 Francis St, Boston, MA 02115 USA
[6] Oregon Hlth & Sci Univ, Dept Surg, Portland, OR 97201 USA
[7] Albany Med Coll, Dept Surg, Albany, NY 12208 USA