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| Methods | RCT ‐ 1982‐86 | |
| Participants | 83 patients | |
| Interventions | surgery vs surgery + chemotherapy doxorubicin 100§ mitomycin C 20§ tegafur(a)* 600‐800§ tegafur(b)* 600‐800§ | |
| Outcomes | survival | |
| Notes | doxorubicin given in 3 cycles tegafur (a) daily treatment tegafur (b) daily treatment > 1 year | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment (selection bias) | Low risk | A ‐ Adequate |
