1 Généthon , Evry , France ; INSERM U974, Université Pierre et Marie Curie (Paris 6) , Paris , France.
2 Center for Molecular Medicine Cologne (CMMC), University of Cologne , Cologne , Germany ; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne , Bonn , Germany ; Department I of Internal Medicine, University Hospital of Cologne , Cologne , Germany.