Redigert av Conor P, MCh, PhD, FRSCI , FACS (Chairman, Digestive Disease and Surgery Institute, Cleveland Clini, James M., MBChB, MMedSci, FRACS, FACS Church, Ravi P., MBBS, MS, FRCS , FRCS (Glas), FACS, FASCRS, MSc EBM (Oxford) Kiran, Victor W., MBBS, MS, MD , FRACS, FRACS , FACS, FRCS (Ed), FASCRS, OA (Formerly Rupert B. Turnball,, 2016.