1. Postanesthesia care unit;Tricarico;J PeriAnesth Nurs,1998
2. Anaesthetic and postoperative recovery rooms;Zuck;Anaesthesia,1995
3. Post Anesthesia Care Nursing;Litwack,1995
4. The evolution of the intensive care units;Hilberman;Crit Care Med,1975
5. An account of the first use of sulphuric ether by inhalation as an anesthetic in surgical operations;Long;South Med Surg J,1849