1. University of Massachusetts Dartmouth,Department of Computer and Information Science,North Dartmouth,MA,USA,02047
2. University of Vermont Medical Center and the Robert Larner College of Medicine, University of Vermont,Department of Radiology Oncology & Medical Physics,Burlington,VT,USA,05405
3. 8100 Cambridge St.,Houston,TX,USA,77054
4. Department of N euroradiology at the Barrow Neurological Institute,AZ,USA,85013
5. UIH America Inc.,Houston,TX,USA,77054