1. Neisseria Unit and the French National Reference Center for Meningococci, Institut Pasteur, Paris, France
2. Irish Meningococcal and Meningitis Reference Laboratory, The Children's University Hospital, Dublin, Ireland
3. WHO Collaborating Center for Reference and Research on Meningococci, Division of Infectious Disease Control, Norwegian Institute of Public Health
4. Institute of Oral Biology, University of Oslo, Oslo, Norway
5. Scottish Meningococcus and Pneumococcus Reference Laboratory, Stobhill Hospital
6. Division of Infection and Immunity, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow
7. Meningococcal Reference Unit, Health Protection Agency, Manchester Royal Infirmary, Manchester, United Kingdom
8. Institute for Hygiene and Microbiology, National Reference Center for Meningococci, University of Würzburg, Germany
9. National Reference Centre for Meningococci, Austrian Agency for Health and Food Safety, Graz, Austria
10. National Reference Laboratory for Meningococcal Infections, National Institute of Public Health, Prague, Czech Republic
11. National Meningococcal Reference Laboratory, NIPH, Athens, Greece
12. National Reference Laboratory for Pathogenic Neisseria, Department of Clinical Microbiology, University Hospital, Örebro, Sweden
13. Centre Muraz, Bobo Dioulasso, Burkina Faso