There is no possible way to provide any individual with the sum total of current human medical practice.
You ever had to fix a computer before? Ever had to look up the details of how to do it at castlecops or someplace?
The human body is just the tiniest bit more complex than that. Doctors have to look things up all the time, but those that I've worked with have used online resources as a reference on the details of something they were already passing familiar with, as opposed to new research. Besides, maybe he looked it up to get an idea what it was, then went to find Gray's or something.
Still, methinks you need more snopes in your diet.
Unrelatedly, I'd like to note that at whatever point I catch one of my kids reading about zoophilia on wikipedia, the moment after I get through "persuading" them not to do it again, I'm going to ... ah, you know, I think I'd rather not have that in e-print. But let's just say that the alien icon in this case might be taken as a clue, if you probe what I'm saying there, Jimbo.