I believe you, but I just wanted to read up about where serotonin receptors are expressed in the human body in what amount, but the Wikipedia page on serotonin receptors didn't write about it.

I'm not in the medical field, but try to keep up just a little bit to have some basic knowledge, but it's quite hard as often I see that Wikipedia is many years behind.

At the same time medical articles take a lot of time to read, as they are much less accessable.