There was a super long surgery. For a few hours there wasn't really anything I could do, so I decided to observe the procedure. And then I decided to draw the procedure.
Don't have the original drawing anymore, one of the doctors took it home after I gave it to him (the one in the middle!). They liked it, though, so they kinda fed my ego for a bit ^^
(the procedure was a laparoscopic colectomy, in case anybody's curious)