1996 - Present Chair, Department of Pharmacology, College of Medicine, University of Vermont, Burlington, VT 10/06 - Present Professor, Institute of Cardiovascular Science, School of Medicine, University of Manchester, Manchester, UK 10/12 - Present Visiting Professor of Pharmacology, University of Oxford, Oxford, UK 1995 - 1996 Interim Chair, Department of Pharmacology, University of Vermont 1993 - Present Professor, Department of Molecular Physiology & Biophysics, University of Vermont (Secondary) 1992 - Present Professor, Department of Pharmacology, College of Medicine, University of Vermont 1990 - 1992 Associate Professor with Tenure, Department of Pharmacology, University of Vermont 1986 - 1990 Assistant Professor, Department of Pharmacology, University of Vermont 1984 - 1986 Assistant Professor, Department of Pharmacology, University of Miami School of Medicine, Miami, FL 1982 - 1984 Research Assistant Professor, Department of Physiology, University of Maryland School of Medicine, Baltimore, MD. 1981 - 1982 Research Fellow of the Alexander von Humboldt Stiftung, Fakultät für Biologie, Universität Konstanz, West Germany. 1980 - 1981 Research Fellow of the American Heart Association, Dept. of Physiology, University of Maryland, Baltimore, MD