- Correspondence to Dr Chung-Jung Lin, Department of Radiology, Taipei Veterans General Hospital, No 201, Sec 2, Shipai Rd, Beitou District, Taipei 112, Taiwan;
- Received 27 June 2017
- Revised 6 August 2017
- Accepted 8 August 2017
- Published online 30 August 2017.
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