title: Pain in the ICU - The fifth sign, not the fifth element.
authors: Servicio de Medicina Intensiva, Hospital Universitario de Puerta de Hierro-Majadahonda, Spain. Electronic address: carlos.chamorroj@salud.madrid.org.
authors: C
authors: C
authors: Chamorro
mesh_terms: D006801:Humans; D007362:Intensive Care Units; D010146:Pain; D010147:Pain Measurement