| Label | Id | |
|---|---|---|
| Experiments | PROC:LCH | |
| research study | PROC:NCI_NCI-GLOSS | |
| research study | PROC:MTH | |
| trial study | PROC:AOD | |
| study trial | PROC:CHV | |
| studies trial | PROC:CHV | |
| studies trials | PROC:CHV | |
| trial study | PROC:CHV | |
| study trials | PROC:CHV | |
| local survey | PROC:AOD | |
| national survey | PROC:AOD | |
| national survey | PROC:CHV | |
| demographic study | PROC:AOD | |
| poll | PROC:AOD | |
| social survey | PROC:AOD |
