| No | Author | Year | Total numbe of cases (N) | Required for learning (N) | Thoracic procedure | Abdominal prodedure |
| 1 | Osugi H | 2002 | 80 | 34 | Left lateral | Laparotomy |
| 2 | Song SY | 2009 | 24 | 14 | Left lateral | Laparoscopy |
| 3 | Kunisaki C | 2011 | 92 | 40 | Left lateral | Laparoscopy |
| 4 | Guo W | 2012 | 89 | 30 | Left lateral | Laparotomy |
| 5 | Lin J | 2012 | 80 | 40 | Left lateral | Laparoscopy |
| 6 | Our report | - | 60 | 20 | Left lateral | Laparoscopy |