- Correspondence to Dr Hirotaka Matsuo, Department of Integrative Physiology and Bio-Nano Medicine, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama 359-8513, Japan;
- Received July 1, 2014
- Revised December 22, 2014
- Accepted January 6, 2015
- First published February 2, 2015.
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