| Merck & Co. Inc. | http://www.merck.com |
| Roche | http://www.roche.com |
| Glaxo Wellcome Inc. | http://www.glaxowellcome.com |
| Pfizer | http://www.pfizer.com |
| Novartis (formed by the merger of Ciba-Geigy and Sandoz) | http://www.novartis.com |
| American Home Products | http://www.ahp.com |
| Lilly (Eli) | http://www.lilly.com |
| SmithKline Beecham | http://www.sb.com |
| Astra AB | http://www.astra.com |
| Zeneca Pharmaceuticals | http://www.zeneca.com |
| Schering-Plough | http://www.sch-plough.com |
| Pharmacia & Upjohn | http://www.pharmacia.se/ns3index.html |
| Amgen | http://wwwext.Amgen.com |
| Takeda Chemical Industries | http://www.medic.mie-u.ac.jp/takeda |
| Sankyo | http://www.sankyo-pharma.com |
| Taisho Pharmaceutical | http://www.iijnet.or.jp/TAISHO |
| Yamanouchi Pharmaceutical | http://www.yamanouchi.co.jp/eg |