1 T.S. Sato, Clinical Assistant Professor, Divisions of Pediatric Radiology and Neuroradiology, Department of Radiology, Carver College of Medicine, University of Iowa.
2 P.J. Ferguson, Professor, Division of Pediatric Rheumatology, Allergy and Immunology, Department of Pediatrics, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA. [email protected].