https://gbdeclaration.org/
The Great Barrington Declaration specifically mentioned physical health of children. It did not specify this particular type of situation though.
However, in this article the main author of the declaration did specify:
https://www.telegraph.co.uk/news/2020/06/27/lockdown-social-...
Here are the "cancelled" articles:
https://reclaimthenet.org/facebook-deletes-epidemiologists-b...
https://www.breitbart.com/europe/2020/10/13/big-tech-censors...