[abraininavat]

the best doctor wrote the original material

I agree with everything else in your comment, but that doesn't make sense. How do you arrive at that conclusion?

[codex]

I am, admittedly, handwaving here. "Best" is so subjective that's hard to define, so I define it as "the ones who move the field forward with original work." In other contexts it could mean something completely different.

[abraininavat]

I see. Well I'd differentiate between a researcher and a clinician. The best researcher may not be the doctor you want diagnosing and treating you.