This is a phenomenon in which, when both index finger nails are pressed together, a diamond-shaped gap does not form between the nails!
Symptoms that appear in 35% of lung cancer patients
It is called
It’s a bit vague, but if you’re bored, try following along.
Wouldn’t it be good to do prevention(?)??…
https://www.seoul.co.kr/news/life/health-news/2020/01/21/20200121500109