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| Methods | Study design: cluster‐RCT |
| Participants |
Service type: centre‐based Country (region): China (Shenzhen City) Number of services participating: unclear (1400 children) |
| Interventions | Insufficient information available in trial registry to determine eligibility |
| Outcomes | Insufficient information available in trial registry to determine eligibility |
| Notes | ChiCTR1800017292 |
RCT: randomised controlled trial
