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Forehead volume / brow
Compare the procedure groups used for this indication, ranked by evidence grade. Each grade comes from an expert read of the actual studies (design, quality, on-topic relevance); direction reflects what those studies conclude.
| Grade | Direction | Procedure group | RCT & meta | Clinical & observational | Case reports | Total papers |
|---|---|---|---|---|---|---|
| D | Limited | HA filler crosslinked | 17 | 14 | 44 | 183 |