[1] Univ Washington, Dept Surg, 1959 NE Pacific St,Box 356410, Seattle, WA 98195 USA
[2] BSC Management & Vivac Consulting, Los Angeles, CA USA
[3] TOA Surg Specialists, Durham, NC USA
[4] Duke Reg Hosp, Durham, NC USA
[5] GI Surg Specialists, Ft Myers, FL USA
[6] New York Univ Langone Hlth, Dept Surg, New York, NY USA
[7] Montefiore Med Ctr, Dept Surg, The Bronx, NY USA
[8] Mt Sinai Hosp, Dept Surg, New York, NY USA
[9] Atrium Hlth, Carolinas Med Ctr, Dept Surg, Charlotte, NC USA