- Correspondence to Dr Beatriz Muñoz-Fraile, Department of Pediatric Radiology. Hospital Universitario 12 de Octubre, Av de Córdoba s/n., Madrid 28041, Spain;
- Received April 23, 2014
- Revised June 28, 2014
- Accepted July 10, 2014
- First published July 23, 2014.
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