| Affiliation: | 1. Westenfelder Strasse 62–64, 44867 Bochum-Wattenscheid, Germany;2. Stoke Mandeville Hospital, Stoke Mandeville UK;3. FSA Akvrevri District Hospital, Akvrevri, Iceland;4. Tartu Women''s Hospital, Tartu, Estonia;5. El Mohandessin, Cairo, Egypt;6. Glaxo Wellcome Research and Development, Greenford, UK;1. Department of Oral and MaxilloFacial Surgery, The Dental School, University of Newcastle, Framlington Place, Newcastle upon Tyne NE2 4BW, UK;2. Department of Anaesthetics, Royal Victoria Infirmary, Newcastle upon Tyne NE1 4LP, UK;1. NIVEL, Netherlands Institute for Health Services Research, P.O. Box 1568, 3500 BN Utrecht, The Netherlands;2. VU-medical centre, Vrije Universiteit Amsterdam, P.O. Box 7057, 1007 MB Amsterdam, The Netherlands;1. Department of Anaesthetics, Cta de Cirera s/n, 08304 Mataró (Barcelona), Spain;2. Department of General Surgery, Hospital de Mataró, 08304 Mataró (Barcelona), Spain |
