1 Institute of Systems Immunology, University Medical Center Hamburg Eppendorf, Hamburg 20251, Germany.
2 Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon 1649-028, Portugal.
3 Institute of Systems Immunology, University Medical Center Hamburg Eppendorf, Hamburg 20251, Germany. Electronic address: immo.prinz@zmnh.uni-hamburg.de.
4 Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon 1649-028, Portugal. Electronic address: bssantos@medicina.ulisboa.pt.