Amgen Inc. (US)
AstraZeneca (UK)
Novartis AG (Switzerland)
Boehringer Ingelheim International GmbH (Germany)
Johnson & Johnson Services Inc. (UK)
Bristol-Myers Squibb Company (US)
Merck Sharp & Dohme Corp. (US)
Pfizer Inc. (US)
Gilead Sciences Inc. (California)
and others