1. Julius Centrum voor Gezondheidswetenschappen en Eerstelijns Geneeskunde, Utrecht, Netherlands
2. Smart Data Analysis and Statistics B.V., Utrecht, Netherlands
3. Biogen, Toronto, Canada
4. Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
5. Department of Epidemiology, Bioastatistics and Occupational Health, McGill University, Quebec, Canada
6. Biogen Inc, Cambridge, USA
7. Biogen Spain SL, Madrid, Spain