Waist Circumference and Waist/Hip Ratio Are Better Predictive Risk Factors for Mortality and Morbidity after Colorectal Surgery Than Body Mass Index and Body Surface Area by Kartheuser, A, Leonard, D, Penninckx, F, Paterson, H, Brandt, D, Remue, C, Bugli, C, Dozois, E, Mortensen, N, Ris, F, Tiret, E