- Correspondence to Dr Yoshiki Sekijima, Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto 390-8621, Japan;
- Received September 9, 2014
- Revised December 22, 2014
- Accepted December 25, 2014
- First published January 20, 2015.
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