Anupindi Sudha A, Janitz Emily, Darge Kassa
Department of Radiology, Division of Body Imaging, The Children's Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA.
Semin Roentgenol. 2012 Apr;47(2):118-26. doi: 10.1053/j.ro.2011.11.003.