1. Department of Surgical Sciences; Section of Anesthesiology and Intensive Care Medicine; Uppsala University Hospital; Uppsala Sweden
2. Department of Operative and Intensive Care Medicine; Hallands Hospital Halmstad; Halmstad Sweden
3. Uppsala University Hospital; Department of Surgical Sciences; Section of Cardiothoracic Anesthesiology and Intensive Care Medicine; Uppsala Sweden
4. Department of Chemistry-BMC; Uppsala University; Uppsala Sweden