* This report (dated May 1989) was prepared by Svante Arvidsson, MD, Professor, Department of Anesthesiology, Ostra Hospital, Gothenburg; Lars Bjork, MD, Professor, Department of Radiology, Gothenburg University: Bengt Brorsson, PhD, Associate Professor, Department of Social and Preventive Medicine, Uppsala University; Ulf Haglund, MD, Professor, Department of Surgery, Uppsala University; Lennart Jorfeldt, MD, Professor, Department of Clinical Physiology, Linkoping University; Dag Lundberg, MD (chairman), Professor, Department of Anesthesiology, Lund University; Anders Norlund, PhD (Economics), Administrative Department, Lund Hospital. The basic research for this report was done by Svante Arvidsson, Bengt Brorsson, and Anders Norlund
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