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First Author:
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| Wenjun Zhao |
| Graduate School of Economics, Hitotsubashi University |
| zhaowenjun517@gmail.com |
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Second Author:
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| Mingjie Liu |
| China Unicom Research Institute |
| liumj100@chinaunicom.cn |
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Third Author:
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| Emiko Usui |
| Institute of Economic Research, Hitotsubashi University |
| emiko.usui@r.hit-u.ac.jp |
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Fourth Author:
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| Ting Yin |
| Faculty of Economics, Toyo University |
| yin@toyo.jp |
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