Bristol-Myers Squibb, États-Unis; Abbott Laboratories, États-Unis; Biovitrum, Suède; Novartis, Suisse; **UBC Inc, Belgique; Immunex Corporation, États-Unis; Janssen Biotech, Inc, États-Unis; Elan Pharmaceuticals, Inc, Irlande; Regeneron Pharmaceuticals, Inc, États-Unis; ***Roche, Suisse.
Bristol-Myers Squibb, USA; Abbott Laboratories, USA; Biovitrum, Sweden; Novartis, Switzerland; **UBC Inc, Belgium; Immunex Corporation, USA; Janssen Biotech, Inc, USA; Elan Pharmaceuticals, Inc, Ireland; Regeneron Pharmaceuticals, Inc, USA; ***Roche, Switzerland.