1. Department of Electrical and Computer Engineering, College of Engineering University of Iowa Iowa City IA USA
2. Department of Internal Medicine, Carver College of Medicine University of Iowa Iowa City IA USA
3. Division of Rheumatology, Department of Medicine National Jewish Health Denver CO USA
4. Department of Clinical Medicine Columbia University New York NY USA
5. Department of Radiology, Carver College of Medicine University of Iowa Iowa City IA USA
6. Department of Epidemiology, College of Public Health University of Iowa Iowa City IA USA
7. Department of Medicine Columbia University New York NY USA
8. Department of Biomedical Engineering, College of Engineering University of Iowa Iowa City IA USA