1. Department of Electrical and Computer Engineering, Edmund T. Pratt Jr. School of Engineering, Duke University, Box 90291, Durham, NC 27708.
2. Department of Pediatrics, Division of Pediatric Endocrinology and Diabetes, Duke University School of Medicine, Durham, NC.
3. Department of Pediatrics, Division of Pediatric Hematology and Oncology, Duke University School of Medicine, Durham, NC.
4. Department of Radiology, Duke University School of Medicine, Durham, NC.
5. Department of Biostatistics and Bioinformatics, Duke University, Durham, NC.