1. Department of Clinical Dentistry–Center for Clinical Dental Research, University of Bergen, Bergen, Norway;
2. Department of Periodontology, Forsyth Institute, Cambridge, Massachusetts;
3. Department of Clinical Dentistry–Periodontics, University of Bergen, Bergen, Norway;
4. Institute of Medicine, Section of Pharmacology, University of Bergen, Bergen, Norway; and
5. Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts