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| Methods | RCT ‐ 1982‐87 | |
| Participants | 28 patients | |
| Interventions | surgery vs surgery + chemotherapy cisplatin 80 tegafur* 600‐800§ | |
| Outcomes | survival | |
| Notes | cisplatin given in 1 cycle tegafur daily treatment > 1 year | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment (selection bias) | Low risk | A ‐ Adequate |
