1. Optum Lincoln Rhode Island U.S.A
2. Purdue Pharma LP Stamford Connecticut U.S.A
3. Department of Medicine Johns Hopkins University Baltimore Maryland U.S.A
4. Department of Anesthesiology Georgetown University School of Medicine Washington District of Columbia U.S.A
5. Department of Pharmacology Temple University School of Medicine Philadelphia Pennsylvania U.S.A
6. Department of Pharmaceutical Sciences Temple University School of Pharmacy Philadelphia Pennsylvania U.S.A