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| No. | Search Strings | Hits |
|---|---|---|
| 1 | “forest therap*”.ab,ti. | 39 |
| 2 | “forest bath*”.ab,ti. | 45 |
| 3 | forest medicine.ab,ti. | 4 |
| 4 | Shinrin-yoku.ab,ti. | 21 |
| 5 | forest healing.ab,ti. | 4 |
| 6 | “review*”.ab,ti. | 2,679,607 |
| 7 | “systematic*”.ab,ti. | 565,832 |
| 8 | “overview*”.ab,ti. | 198,810 |
| 9 | “Meta-Analys*”.ab,ti. | 217,515 |
| 10 | 1 or 2 or 3 or 4 or 5 | 90 |
| 11 | 6 or 7 or 8 or 9 | 3,173,197 |
| 12 | 10 and 11 | 22 |
