1. Instituto de Biologia Molecular e Celular, 4150-180 Porto, Portugal.
2. Institute of Molecular Health Sciences, Department of Biology, Swiss Federal Institute of Technology, ETH Zurich, 8093 Zurich, Switzerland.
3. EMPA, Swiss Federal Laboratories for Materials Testing and Research, Materials-Biology Interaction, 9014 St Gallen, Switzerland.
4. Max-Planck Institut für Biochemie, 82152 Martinsried, Germany.
5. Department of Biochemistry and Molecular Biology, Universitat de València, 46100 Burjassot, València, Spain.
6. Max-Planck Institut für Experimentelle Medizin, 37075 Göttingen, Germany.
7. Wellcome Trust-Medical Research Council, Stem Cell Institute, Cambridge CB2 2XY, UK.
8. Erasmus MC, Postbus 2040, 3000 CA Rotterdam, The Netherlands.