1. Department of Biochemistry and Biophysics; University of North Carolina at Chapel Hill; Chapel Hill North Carolina
2. Emeritus, Department of Biochemistry and Biophysics; University of North Carolina at Chapel Hill; Chapel Hill North Carolina
3. Department of Chemistry; University of North Carolina at Chapel Hill; Chapel Hill North Carolina
4. Emeritus; Pharmacia-Upjohn Pharmaceutical; Kalamazoo Michigan
5. SAS Institute Inc. 100 SAS Campus Drive Cary; North Carolina
6. Emeritus Regents Professor of Biochemistry and Molecular Biology; University of Georgia; Athens Georgia