1 Assistance Publique-Hopitaux de Paris, Henri Mondor Hospital, Haematology Department, Créteil, Paris 94000, France; University Paris-Est Créteil, Créteil, Paris, France. Electronic address: catherine.cordonnier@aphp.fr.
2 Division of Infectious Diseases, University of Genoa and IRCCS Ospedale Policlinico San Martino, Genova, Italy.
3 Department of Haematology and Coagulation, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.