Müller Matthias, Scholz Stefan, Kwapisz Myron, Akintürk Hakan, Thul Josef, Hempelmann Gunter
Department of Anaesthesiology, Intensive Care Medicine, Pain Therapy, University Hospital Giessen, Germany.
Anesthesiology. 2003 Sep;99(3):743-4. doi: 10.1097/00000542-200309000-00032.