1. Merck & Co., Inc. Kenilworth New Jersey USA
2. Bristol‐Myers Squibb Devens Massachusetts USA
3. GlaxoSmithKline King of Prussia Pennsylvania USA
4. Pfizer Inc. New York city New York USA
5. Boehringer Ingelheim Pharma GmbH & Co. KG Biberach and der Riss Germany
6. BioPhorum Operations Group London UK