An Epidemiological Investigation on Correct Wearing of Mask by Direct Spray Test
Clinical trial NCT04497675 · COMPLETED
Trial details
- NCT number
- NCT04497675
- Sponsor
- Fuwai Yunnan Cardiovascular Hospital
- Status
- COMPLETED
- Study type
- OBSERVATIONAL
- Start date
- 2020-06-19
- Primary completion
- 2020-08-31
- Enrollment
- 6000
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