1. Department of Laboratory Medicine, Division of Clinical Immunology and Transfusion Medicine, Karolinska Institutet at Karolinska University Hospital, Huddinge, Stockholm, Sweden
2. Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago, Chile
3. Department of Immunology, Genetics and Pathology, Uppsala Genome Center, Uppsala University, Uppsala, Sweden
4. Instituto de Productos Lácteos de Asturias, IPLA-CSIC, Asturias, Spain