[1] Carolinas Med Ctr, Dept Surg, Div Gastrointestinal & Minimally Invas Surg, 1025 Morehead Med Dr,Ste 300, Charlotte, NC 28204 USA
[2] Perelman Sch Med, Dept Surg, Div Plast Surg, Philadelphia, PA USA
[3] Royal Devon & Exeter Hosp, Royal Devon & Exeter NHS Fdn Trust, Dept Colorectal Surg, Exeter, Devon, England