1. Division of Endocrinology and Diabetes and Center for Integrated Human Physiology, University Hospital of Zürich, Zürich, Switzerland
2. Department of Pathology, University Hospital of Zürich, Zürich, Switzerland
3. Division of Neuroendocrinology, Institute of Anatomy, University of Zürich, Zürich, Switzerland
4. Department of Genetic Medicine and Development, University Medical Center, Geneva, Switzerland
5. Institute of Molecular Biotechnology, Austrian Academy of Science, Vienna, Austria
6. Laboratory for Transplantation Immunology, University Hospital of Zürich, Zürich, Switzerland
7. Division of Clinical Immunology, University Hospital of Zürich, Zürich, Switzerland
8. Unité mixte de recherches 7059, National Center for Scientific Research, Paris 7 University/D. Diderot, Paris, France