1. Department of Surgical and Perioperative Sciences, Anesthesiology and Intensive Care Medicine Unit Umeå University Umea Sweden
2. Department of Surgical and Perioperative Sciences, Clinical Physiology Section Umeå University Umea Sweden
3. Department of Surgical and Perioperative Sciences, Anesthesiology and Intensive Care Medicine Unit Umeå University (Sunderby sjukhus) Umea Sweden