Affiliation: | 1. Clinical Epidemiologist, Emergency Department, Medical Center Haaglanden, P.O. Box 432, 2501 CK The Hague, The Netherlands;2. Emergency Nurse Practitioner, Emergency Department, Medical Center Haaglanden, P.O. Box 432, 2501 CK The Hague, The Netherlands;3. Research Fellow, Center for Health Economics Research and Evaluation, University of Technology Sydney, P.O. Box 123 Broadway, Sydney, NSW 2007, Australia |