Affiliation: | (1) Division of Gastroenterologic Surgery, Mayo Clinic, 200 First St. SW, Rochester, MN 55905, USA;(2) Division of Biostatistics, Mayo Clinic, 200 First St. SW, Rochester, MN 55905, USA;(3) Division of Colon and Rectal Surgery, Mayo Clinic, 200 First St. SW, Rochester, MN 55905, USA; |