mustski
Angel Diva
This is a cursory, summary article but it’s the first I’ve heard of a link between altitude and suicide. They mention Salt Lake but no mention of Denver. I would think Denver would be good candidate for data on altitude.
https://www.sltrib.com/news/health/2018/07/01/university-utah-research/
https://www.sltrib.com/news/health/2018/07/01/university-utah-research/