How could a fellow met a fellow?

9 10- I believe actually. Or at least I think.

A fellow is a somewhat old-fashioned term for a man, similar to "chap" or "guy." In more formal usage it can mean a member of an academic society, such as a college.

They have been fellows since childhood.

A doctor of medicine who additionaly graduated from a specialist training course in cardiology or cardiosurgery. In some countries also called 'cardiology specialist' or 'cardiology doctor'.

all depends on what you mean, but as an example they are an internationally recognized group of scientists and experts pioneering new science.