An updated systematic review and consensus definitions for standardised endpoints in perioperative medicine: patient comfort and pain relief

Paul S. Myles, Sophie Wallace, Oliver Boney, Mari Botti, Frances Chung, Allan M Cyna, Tong J. Gan, Michael P. W. Grocott, Mark P. Jensen, Henrik Kehlet, Andrea Kurz, Maxime Léger, Ulrica Nilsson, Philip J. Peyton, Daniel I. Sessler, Martin R. Tramèr, Christopher L. Wu