| Label | Id | |
|---|---|---|
| secondary data analysis | PROC | |
| field research | PROC | |
| post-mortem study | PROC | |
| postmortem study | PROC | |
| placebo study | PROC | |
| placebo studies | PROC | |
| placebos studies | PROC | |
| placebo study | PROC | |
| research plan (individual study) | PROC | |
| overall research plan | PROC | |
| overall research strategy | PROC | |
| research planning | PROC | |
| study planning | PROC | |
| plan research | PROC | |
| research plan | PROC |