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Number of publications for each study type and phase
| Category | No. of studies (total 28) | References |
|---|---|---|
| Phases of clinical studies | ||
| Pilot/feasibility study incl. case report | 15 (54%) | [104–108, 118, 119, 122, 124–129, 133] |
| Phase 1 (safety assessment) | 8 (26%) | [109–112, 116, 123, 130, 131] |
| Phase 2 (efficacy assessment) | 8 (26%) | [103, 113–115, 117, 120, 121, 132] |
| Phase 3 (large scale efficacy assessment through a multi-centre RCT) | 0 (0%) | – |
| Phase 4 (post-market surveillance) | 0 (0%) | – |
