1. Pfizer, Inc, Global Pathology and Investigative Toxicology, Groton, CT, USA
2. Pathology Science, ERBC Group, Pomezia (RM), Italy
3. Janssen Pharmaceutical Companies of Johnson & Johnson, Janssen Research & Development, Nonclinical Safety, Beerse, Belgium
4. Charles River Laboratories, Inc, Spencerville, OH, USA
5. Charles River Laboratories, Inc, Shrewsbury, MA, USA
6. GEMpath, Inc., Longmont, CO, USA
7. Consultants in Veterinary Pathology, Inc, Murrysville, PA, USA