| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| helsinki declaration of 1975 | 1.33 | 0.6 | 1722 | 8 | 28 |
| helsinki | 1.12 | 0.8 | 9770 | 69 | 8 |
| declaration | 1.03 | 0.6 | 5617 | 95 | 11 |
| of | 0.06 | 0.8 | 9437 | 17 | 2 |
| 1975 | 0.88 | 0.4 | 5157 | 45 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| helsinki declaration of 1975 | 1.56 | 0.9 | 8099 | 59 |
