1. Staff Scientist, Lister Hill National Center for Biomedical Communications National Library of Medicine, National Institutes of Health Bldg. 38A, Room 10S-1022, 8600 Rockville Pike MSC-3824 Bethesda, MD 20894, USA
2. Assistant Professor, Director of Informatics, Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, IN, USA
3. Associate Professor, Children's Health Services Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA
4. Computer Science Branch, Lister Hill National Center for Biomedical Communications, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894, USA
5. Staff Scientist, Communications Engineering Branch, Lister Hill National Center for Biomedical Communications, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894, USA
6. Branch Chief, Communications Engineering Branch, Lister Hill National Center for Biomedical Communications, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894, USA
7. Director, Lister Hill National Center for Biomedical Communications, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894, USA