1. Department of Radiology & Imaging Sciences Emory University Atlanta Georgia USA
2. Department of Orthopedics Emory University Atlanta Georgia USA
3. Vanderbilt University Institute of Imaging SciencesVanderbilt University Medical center Nashville Tennessee USA
4. Norwich Medical School University of East Anglia Norwich United Kingdom
5. C.J. Gorter Center for High Field MRI Department of Radiology Leiden Medical Center Leiden the Netherlands
6. National Institute on AgingNational Institutes of Health Baltimore Maryland USA