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| Methods | see Bastion 1993, arm B | |
| Participants | see Bastion 1993, arm B | |
| Interventions | see Bastion 1993, arm B | |
| Outcomes | see Bastion 1993, arm B | |
| Notes | see Bastion 1993, arm B | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment? | Unclear risk | B ‐ Unclear |
