1. AstraZeneca, Macclesfield, SK10 4TG, United Kingdom
2. Johnson and Johnson PRD, 2340 Beerse, Belgium
3. GEMpath Inc., Longmont, CO 80503-2339, USA
4. Ipsen, 91966 Les Ulis Cedex, France
5. Experimental Pathology Laboratories, Research Triangle Park NC 22709, USA
6. Daiichi Sankyo Co., Ltd., Japan
7. Bayer CropScience, 69009 Lyon, France
8. Harlan Laboratories, 4452 Itingen, Switzerland