1 Department of Digestive Surgery, CHU Estaing, 1, place Lucie-Aubrac, 63003 Clermont-Ferrand, France; Francophone Group for enhanced recovery after surgery (GRACE), 63110 Beaumont, France. Electronic address: [email protected].
2 Department of Anaesthesia, CHU Estaing, 1, place Lucie-Aubrac, 63003 Clermont-Ferrand, France; Francophone Group for enhanced recovery after surgery (GRACE), 63110 Beaumont, France.