1. Synthetic Bioactive Molecules Section, Laboratory of Bioorganic Chemistry (LBC) National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health Bethesda Maryland USA
2. Department of Research and Development Altratech Ltd. Cork Ireland
3. Biomedical Engineering and Physical Science Shared Resource National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health Bethesda Maryland USA