No real issues from mediawiki but this one worries me a bit from @wikipedia. It just sounds a bit too technical/inside baseball. Even I read it and went "arbitrary access? WTF is that?" before thinking harder and realizing they mean being able to call  within templates etc. I worry that the vast majority of our audience would have no idea what this is.

Fine by me as long as we're ok with calling it Wikipedia's medical encyclopedia (possibly implying it's an official app?). 

LGTM

 

mayyyybe from @wikipedia, fairly technical though. @mediawiki for sure 

 

LGTM for @mediawiki

 

LGTM for @wikimedia/@wikipedia/@wikicommons