1. Charles River Laboratories, Inc. Reno Nevada USA
2. Eli Lilly and Company Indianapolis Indiana USA
3. GlaxoSmithKline Collegeville Pennsylvania USA
4. Pfizer Groton Connecticut USA
5. AbbVie Chicago Illinois USA
6. Genentech, Inc. South San Francisco California USA
7. Labcorp Drug Development Madison Wisconsin USA
8. Inotiv, Maryland Heights Missouri USA