Timeline for Is it ok to use volunteers for prospective cohort studies
Current License: CC BY-SA 4.0
2 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 16, 2021 at 22:35 | comment | added | John Hon | so does using volunteers in a prospective cohort study introduce bias? | |
| Jan 15, 2021 at 8:51 | history | answered | Bernhard | CC BY-SA 4.0 |