1. Division of Immunology and Immunotherapy, Center for Applied Medical Research (CIMA); University of Navarra; Pamplona Spain
2. Instituto de Investigación Sanitaria de Navarra (IdISNA); Pamplona Spain
3. University Clinic; University of Navarra; Pamplona Spain
4. Ubiquitylation and Cancer Molecular Biology Laboratory; Foundation for Stem Cell Research, Fundación Inbiomed; San Sebastián Spain
5. Advanced Technology Institute in Life Sciences (ITAV), CNRS-USR3505; Toulouse France
6. University of Toulouse III-Paul Sabatier; Toulouse France
7. Institut de Pharmacologie et de Biologie Structurale (IPBS), CNRS-UMR5089; Toulouse France
8. Bristol-Myers Squibb Company; Princeton NJ USA