- Correspondence to Dr Dae Chul Suh, Department of Radiology, Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Korea;
- Received February 1, 2016
- Revised March 19, 2016
- Accepted March 23, 2016
- First published April 8, 2016.
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