1. Center for Pulmonary Imaging Research, Division of Pulmonary Medicine Cincinnati Children's Hospital Medical Center Cincinnati Ohio
2. Clinical Imaging Physics Group, Department of Radiology Duke University Medical Center Durham North Carolina
3. Imaging Research Center, Department of Radiology Cincinnati Children's Hospital Medical Center Cincinnati Ohio
4. Department of Biomedical Engineering University of Cincinnati Cincinnati Ohio
5. Department of Pediatrics University of Cincinnati College of Medicine Cincinnati Ohio