Chapter 6
A prediction model for severe complications after elective colorectal cancer surgery in patients of 70 years and older Submitted
E.T.D. Souwer
E. Bastiaannet E.W. Steyerberg J.W.T. Dekker W.H. Steup M.E. Hamaker D.J.A. Sonneveld T.A. Burghgraef F. van den Bos J.E.A. Portielje