|
○
|
Amgen
|
|
○
|
Astra Zeneca
|
|
○
|
Bayer Schering
|
|
○
|
BMS
|
|
○
|
Merck Serono
|
|
○
|
Glaxo Wellcome
|
|
○
|
Novartis
|
|
○
|
Pfizer
|
|
○
|
Roche
|
|
○
|
Japanese R&D companies
|