[1] Erasmus MC Canc Inst, Dept Surg Oncol & Gastrointestinal Surg, Doctor Molewaterpl 40, NL-3015 GD Rotterdam, South Holland, Netherlands
[2] Erasmus Univ, Erasmus Ctr Healthcare Governance, Erasmus Sch Hlth Policy & Management, Rotterdam, Netherlands
[3] Erasmus MC, Dept Internal Med, Rotterdam, Netherlands
[4] Maasstad Hosp Rotterdam, Dept Internal Med, Rotterdam, Netherlands
[5] Albert Schweitzer Hosp, Dept Internal Med, Dordrecht, Netherlands
[6] Franciscus Gasthuis & Vlietland Rotterdam, Dept Internal Med, Rotterdam, Netherlands
[7] Albert Schweitzer Hosp, Dept Surg Oncol, Dordrecht, Netherlands