1. Department of Pharmaceutical Sciences, University of Kentucky, Lee T. Todd, Jr. Building, 789 South Limestone Street, Lexington, Kentucky 40536-0596, United States
2. Center for Oral Health Research, College of Dentistry, University of Kentucky, 1095 Virginia Drive, Lexington, Kentucky 40536-0305, United States
3. Division of Periodontics, College of Dentistry, University of Kentucky, 800 Rose Street, Lexington, Kentucky 40536-0305, United States