1. Institute of Medicine, University of Gothenburg, Gothenburg, Sweden.
2. Department of Anesthesiology, Jefferson Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania.
3. Department of Medicine, NU-Hospital Organization, Uddevalla, Sweden.
4. University of Washington, Seattle, Washington.
5. Statistiska Konsultgruppen, Gothenburg, Sweden.
6. Diabetes Research Institute, Mills-Peninsula Health Services, San Mateo, California.