1 Department of Anaesthesiology, Prehospital Emergency Medicine and Pain Therapy, University Hospital Basel, Basel 4031, Switzerland; Basel Institute for Clinical Epidemiology and Biostatistics, University Hospital Basel, Basel 4031, Switzerland; Department of Clinical Research, University of Basel, Basel, Switzerland.
2 Department of Clinical Research, University of Basel, Basel, Switzerland. Electronic address: [email protected].
3 Basel Institute for Clinical Epidemiology and Biostatistics, University Hospital Basel, Basel 4031, Switzerland; Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada.