1. Department of Pharmaceutical Sciences, College of PharmacyUniversity of Arkansas for Medical Sciences Little Rock AR 72205 USA
2. Department of Pharmacodynamics, College of PharmacyUniversity of Florida Gainesville FL 32610 USA
3. Department of Medicinal Chemistry, College of PharmacyUniversity of Florida Gainesville FL 32610 USA
4. Department of Pharmaceutical, Social and Administrative Sciences, School of PharmacySamford University Birmingham AL 35229 USA