1. From Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden; Statens Serum Institut and Copenhagen University Hospital, Copenhagen, Denmark; University of Leicester, Leicester, United Kingdom; Uppsala University, Uppsala, Sweden; Odense University Hospital, Odense, Denmark; Aarhus University Hospital, Aarhus, Denmark; Stanford University School of Medicine, Stanford, California;
2. and Blood Systems Research Institute and University of California, San Francisco, San Francisco, California.