1. School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen, UK
2. Molecular Pharmacology Section, Genitourinary Malignancies Branch, Center for Cancer Research, NCI, NIH, Bethesda, Maryland, USA
3. Current address: Centre for Applied Pharmacokinetic Research, Manchester Pharmacy School, University of Manchester, Manchester, UK
4. Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, USA