1. Institute for Research in Biomedicine, 6500 Bellinzona, Switzerland
2. Division of Genetics and Cell Biology, San Raffaele Scientific Institute, 20132 Milan, Italy
3. HMGBiotech S.r.l., 20133 Milan, Italy
4. Department of Immunology and Oncology, National Center for Biotechnology, Spanish National Research Council, 28049 Madrid, Spain
5. Merck Serono S.A., 1202 Geneva, Switzerland
6. Vita-Salute San Raffaele University, 20132 Milan, Italy