| keep their eyes | 0.59 |
| comprise administering … | 0.42 |
| mean individual | 0.25 |
| use electronic flash li… | 0.25 |
| living individual | 0.32 |
| elected public officials | 0.25 |
| healthy volunteers | 0.16 |
| identified | 0.54 |
| involved in trial | 0.48 |
| assigned to one or more… | 0.42 |
| protected | 0.37 |
| involved in research | 0.28 |
| photographed in full-fa… | 0.25 |
| recruited to participat… | 0.25 |
| issued by the national … | 0.25 |