1. Clinical and Investigative Orthopedics Surgery Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases National Institutes of Health Bethesda Maryland USA
2. Medical Scientist Training Program, Carver College of Medicine University of Iowa Iowa City Iowa USA
3. Department of Medical Imaging University Hospital, School of Medicine, University of Crete Heraklion Greece
4. Advanced Hybrid Imaging Systems, Institute of Computer Science (ICS) Foundation for Research and Technology Hellas (FORTH) Heraklion Greece
5. Metabolic Diseases Branch National Institutes of Diabetes and Digestive and Kidney Diseases Bethesda Maryland USA