1 Division of Colon and Rectal Surgery, Department of Surgery, Medical College of Wisconsin, Milwaukee, WI, USA.
2 Division of Colon and Rectal Surgery, Department of Surgery, Medical College of Wisconsin, Milwaukee, WI, USA. Electronic address: kent.peterson.27@gmail.com.
3 Division of Biostatistics, Department of Health and Equity, Medical College of Wisconsin, Milwaukee, WI, USA.