1. Payen JF, Bosson JL, Chanques G, Mantz J, Labarere J, Investigators of the Dolorea study (2009) Pain assessment is associated with decreased duration of mechanical ventilation in the intensive care unit: a post hoc analysis of the DOLOREA study. Anesthesiology 111:1308–1316
2. Kalfon P, Mimoz O, Auquier P, Loundou A, Gauzit R, Lepape A, Laurens J, Garrigues B, Pottecher T, Malledant Y (2010) Development and validation of a questionnaire for quantitative assessment of perceived discomforts in critically ill patients. Intensive Care Med 36:1751–1758
3. Puntillo KA, Arai S, Cohen NH, Gropper MA, Neuhaus J, Paul SM, Miaskowski C (2010) Symptoms experienced by intensive care unit patients at high risk of dying. Crit Care Med 38:2155–2160
4. Chanques G, Sebbane M, Barbotte E, Viel E, Eledjam JJ, Jaber S (2007) A prospective study of pain at rest: incidence and characteristics of an unrecognized symptom in surgical and trauma versus medical intensive care unit patients. Anesthesiology 107:858–860
5. Puntillo KA, Max A, Timsit JF, Vignoud L, Chanques G, Robleda G, Roche-Campo F, Mancebo J, Divatia JV, Soares M, Ionescu DC, Grintescu IM, Vasiliu IL, Maggiore SM, Rusinova K, Owczuk R, Egerod I, Papathanassoglou ED, Kyranou M, Joynt GM, Burghi G, Freebairn RC, Ho KM, Kaarlola A, Gerritsen RT, Kesecioglu J, Sulaj MM, Norrenberg M, Benoit DD, Seha MS, Hennein A, Periera FJ, Benbenishty JS, Abroug F, Aquilina A, Monte JR, An Y, Azoulay E (2014) Determinants of procedural pain intensity in the intensive care unit. The Europain® study. Am J Respir Crit Care Med 189:39–47