Answer:
Case-Control Study
Explanation:
A case–control study is a type of observational study in which two existing groups differing in outcome are identified and compared on the basis of some supposed causal attribute
I think it's a complicated proposition, usually people with psychic problems are often not taken seriously, and seen as less deserving. I think maybe you should see a different uncle thanking them for thanking them, as it is also difficult for people who have been seriously injured. Perhaps a form of support and after the completion of treatment the medal.
Answer:
Boris Johnson became Prime Minister on 24 July 2019.
