Please note that style sheet is used in this website, Due to unadaptability of the style sheet with the browser used in your computer, pages may not look as original. Even in such a case, however, the contents can be used safely.

Site restoration

Our website, which was temporarily stopped or partially accessible for maintenance
since November 2012, has restored on August 6, 2013.
We apologize for any inconvenience this might have caused during the period.

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