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2. De Bruyn R (2010) The musculoskeletal system. In: de Bruyn R (ed) Pediatric ultrasound. How, why and when, 2nd edn. Churchill Livingstone, Elsevier, Edinburg, pp 319–330
3. Web Link
4. Norton KI (2011) Imaging in developmental dysplasia of the hip. eMedicine http://emedicine.medscape.com/article/408225-overview . Updated May 25, 2011
5. Articles