1. Institute for Research in Biomedicine, CH-6500 Bellinzona, Switzerland.
2. Department of Cell Biology, Helmholtz Centre for Infection Research, D-38124 Braunschweig, Germany.
3. Istituto Giannina Gaslini, I-16147 Genoa, Italy.
4. Institute of Medical Microbiology, University Hospital Essen, University Duisburg-Essen, D-45122 Essen, Germany.
5. Cell Transplant Center and Diabetes Research Institute, University of Miami, Miami, FL 33136, USA.
6. Dipartimento di Biologia e Genetica per le Scienze Mediche, Università degli Studi di Milano, I-20133 Milano, Italy.