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First Author:
 
Haruaki Hirota
Graduate School of Economics, Osaka University,
ege008hh@mail2.econ.osaka-u.ac.jp
 
1-7, Machikaneyama,
Toyonaka, 5600043, Japan
 
 
 

Second Author:

Hideo Yunoue
Osaka School of International Public Policy, Osaka University
yunoue@osipp.osaka-u.ac.jp
 
1-31 Machikaneyama
Toyonaka, 5600043, Japan