1. Midwest Research Institute, 425 Volker Boulevard, Kansas City, Missouri 64110-2299
2. The Dow Chemical Company, Midland, Michigan 48667
3. Johnson & Johnson Consumer Products Worldwide, 199 Grandview Road, Skillman, New Jersey 08558-9418
4. The Procter & Gamble Company, 6100 Center Hill Road, Cincinnati, Ohio 45224