1. Department of Molecular Pharmacology and Experimental Therapeutics; Mayo Clinic College of Medicine; Rochester; Minnesota
2. Department of Neuroscience; Tufts University School of Medicine; Boston; Massachusetts
3. Harry S. Truman Memorial Veterans Hospital/Department of Neurology; University of Missouri; Columbia; Missouri
4. Department of Pharmacology; College of Pharmacy and Pharmaceutical Sciences; University of Toledo; Toledo; Ohio
5. Department of Pharmacology and Therapeutics; University of Manitoba; Winnipeg; Manitoba; Canada