| Clue | Source | Date |
|---|---|---|
| Clinical trial component: 2 wds. | Commuter | 14 Sep 2024 |
| Set given a placebo in a medical trial | The Times Concise | 25 May 2024 |
| Placebo recipients | Newsday | 24 Dec 2022 |
| Set of people receiving a placebo, perhaps ... or what the ends of 20-, 28- and 41-Across belong to? | ||
| Committee responsible for the design of a computer key? | ||
| The League of Extraordinary Nitpickers? |