Anastomotic leakage risk nomogram does not predict leakage accurately in all populations: Results of the international multi-center prospective LekCheck study. Issue 2 (February 2021) - Ozmen, Izel; Grupa, Vera; Bedrikovetski, Sergei; Dudi-Venkata, Nagendra; Huisman, Daitlin; Reudink, Muriël; van Rooijen, Stefanus; Bootsma, Boukje; Roumen, Rudi; Slooter, Gerrit; Sammour, Tarik; Kroon, Hidde; et al.