I've seen a photo which clearly shows the ref waving the medics on. Clearly Mourinho is wrong, but he won't admit it, and after all, he has to blame somebody for not winning that game. I suppose medical ethics means that a doctor can go on the pitch even if the ref hasn't called them on, as in the policeman story, since doctors must treat people before any other consideration. Still, it's fun watching Mourinho in one of his sulks.