1. Janssen, Beerse, Belgium.
2. Biogen, Cambridge, Massachusetts, USA.
3. GlaxoSmithKline, Stevenage, United Kingdom.
4. F. Hoffmann-La Roche Ltd., Basel, Switzerland.
5. Pfizer, Chesterfield, Missouri, USA.
6. AstraZeneca, Macclesfield, United Kingdom.
7. Janssen, Geel, Belgium.
8. Sanofi, Frankfurt, Germany.
9. GlaxoSmithKline, Worthing, United Kingdom.
10. GlaxoSmithKline, King of Prussia, United Kingdom.