From the Department of Radiology, Children’s Hospital of Philadelphia, Philadelphia, PA. Disclosure: The authors declare no conflict of interest. Reprints: Avrum N. Pollock, MD, FRCPC, Department of Radiology, Children’s Hospital of Philadelphia, 34th and Civic Center Blvd, Philadelphia, PA 19104 (e-mail: [email protected]).
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Kitazono et al. (2012) studied this question.
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