[1] Harlem Hosp Med Ctr, Dept Gen Surg, New York, NY 10027 USA
[2] Dow Univ Hlth Sci, Dept Surg, Karachi, Pakistan
[3] Houston Methodist Res Inst, Dept Cardiol, Houston, TX USA
[4] Univ Arizona, Dept Trauma Surg, Tucson, AZ USA
[5] Univ British Columbia, Dept Radiol, Vancouver, BC, Canada