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First Author:
 
Makito Takeuchi
Faculty of Business Administration, Tohoku Gakuin University, Sendai, Japan
makito_takeuchi@mail.tohoku-gakuin.ac.jp
 
 
 
 

Second Author:

Masafumi Tsubuku
Faculty of Economics, Daito Bunka University, Tokyo, Japan
tsubuku@ic.daito.ac.jp