[1] Massachusetts Gen Hosp, Div Colon & Rectal Surg, Boston, MA USA
[2] Harvard Med Sch, Boston, MA USA
[3] Univ Minnesota, Div Colon & Rectal Surg, Minneapolis, MN USA
[4] Lankenau Hosp, Colorectal Ctr, Philadelphia, PA USA
[5] Vanderbilt Univ, Sect Colon & Rectal Surg, Med Ctr, Nashville, TN USA
[6] Univ Texas MD Anderson Canc Ctr, Houston, TX USA
[7] CEPEMED, Anorectal Physiol Dept Rio De Janeiro, Rio De Janeiro, Brazil
[8] Rutgers State Univ, Div Colon & Rectal Surg, New Brunswick, NJ USA
[9] Cleveland Clin, Dept Colon & Rectal Surg, Cleveland, OH USA
[10] Univ Cincinnati, Div Colon & Rectal Surg, Coll Med, Cincinnati, OH USA