- Zeneca Group PL ( )
- Medtronic, Inc. ( )
- Mesa County Physicians Independent Practice Association, Inc. ( )
- Asociacion de Farmacias Region de Arecibo, Inc., and Ricardo L.Alvarez Class, individually and as an officer of Associacion de Farmacias Region de Arecibo, Inc. ( )
- Merck & Co., Inc., and Merck-Medco Managed Care, L.L.C ( )
- Medtronic, Inc., In the Matter of ( )
- Dentists of Juana Diaz, Coamo, and Santa Isabel, Puerto Rico ( )
- M.D. Physicians of Southwest Louisiana, Inc. ( )
- Columbia/HCA Healthcare Corp, In the Matter of ( )
- Institutional Pharmacy Network, Evergreen Pharmaceutical, Inc., et al., In the Matter of ( )
- McKesson Corp. and AmeriSource Health Corp ( )
- Urological Stone Surgeons, Inc.; Stone Centers of America, L.L.C.; Urological Services, Ltd.; Donald M. Norris, M.D.; and Marc A. Rubenstein, M.D ( )
- College of Physicians-Surgeons of Puerto Rico; Centralmed Inc.; Fajardo Group Practice, Inc.; and Norte Med, Inc.,FTC and The Commonwealth of Puerto Rico ( )
- Butterworth Health Corporation and Blodgett Memorial Medical Center ( )
- Mediq Inc.orporated ( )
- CVS Corporation, and Revco D.S., Inc. ( )
- Tenet Healthcare Corporation ( )
- American Home Products Corporation, In the Matter of ( )
- CIBA-Geigy Limited, Sandoz Ltd., and Novartis AG., et al., In the Matter of ( )
- J.C. Penney Company, Inc., and Thrift Drug, Inc., In the Matter of ( )
- Montana Associated Physicians, Inc., and Billings Physician Hospital Alliance, Inc. ( )
- Wesley-Jessen Corporation, In the Matter of ( )
- Fresenius AG, and Fresenius USA, Inc., In the Matter of ( )
- The Upjohn Company, and Pharmacia Aktiebolag, In the Matter of ( )