Prevalidation of the First German Version of the Vocal Fatigue Index (VFI)
Clinical trial NCT03378609 · COMPLETED
Trial details
- NCT number
- NCT03378609
- Sponsor
- University of Zurich
- Status
- COMPLETED
- Phase
- Not Applicable
- Study type
- INTERVENTIONAL
- Start date
- 2018-12-01
- Primary completion
- 2022-12-31
- Enrollment
- 81
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