the Effects of Air Pollution on Respiratory Diseases in Children
Clinical trial NCT05483881 · UNKNOWN
Trial details
- NCT number
- NCT05483881
- Sponsor
- Beijing Children's Hospital
- Status
- UNKNOWN
- Study type
- OBSERVATIONAL
- Start date
- 2022-05-15
- Primary completion
- 2022-12-31
- Enrollment
- 2000000
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