Merck & Co., Inc., Rahway, NJ, USA (United States)
DuPont (United States)
Wilmington University
Bristol-Myers Squibb (United States)
Bristol-Myers Squibb (Germany)
University at Buffalo, State University of New York
Endo Pharmaceuticals (United States)
University of North Carolina at Chapel Hill
University of Michigan–Ann Arbor
University of Kentucky