1 Department of Anaesthesiology and Intensive Care Medicine, Buergerspital Solothurn, Solothurn, Switzerland. Electronic address: florian_marti@bluewin.ch.
2 Department of Internal and Emergency Medicine, Buergerspital Solothurn, Solothurn, Switzerland; Department of Emergency Medicine, Inselspital, University Hospital Bern, Bern, Switzerland.
3 Department of Internal and Emergency Medicine, Buergerspital Solothurn, Solothurn, Switzerland.