| Specialization and related fields | 
|---|
| Business career | ||
|---|---|---|
| 1. | 2004/04/01
        
          ~ 2007/03/31 | |
| 2. | 2007/04/01
        
          ~ 2011/03/31 | |
| 3. | 2011/04/01
        
          ~ | |
| Academic conference presentation | ||
|---|---|---|
| 1. | 2019/05/11 | |