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| Methods | RCT ‐ 1973‐79 | |
| Participants | 146 patients | |
| Interventions | surgery vs surgery + chemotherapy lomustine* 70 cyclophosphamide 1000 methotrexate 40 | |
| Outcomes | survival | |
| Notes | 13 cycles of chemotherapy | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment (selection bias) | Low risk | A ‐ Adequate |
