1. Theodor Kocher Institute University of Bern Bern Switzerland
2. Interfaculty Bioinformatics Unit and Swiss Institute of Bioinformatics University of Bern Bern Switzerland
3. present address: Department of Oncology, Lausanne University Hospital University of Lausanne Lausanne Switzerland
4. Department of Immunology and Center for Immune Imaging Harvard Medical School Boston Massachusetts USA
5. The Ragon Institute of MGH, MIT and Harvard Cambridge Massachusetts USA