A Cohort Study of Smoking Prevention and Health Promotion for Middle School Students in Wuhan, China
Clinical trial NCT00341653 · COMPLETED
Trial details
- NCT number
- NCT00341653
- Sponsor
- National Institute of Environmental Health Sciences (NIEHS)
- Status
- COMPLETED
- Study type
- OBSERVATIONAL
- Start date
- 1998-12-01
- Enrollment
- 5051
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