Nasty business these misdiagnoses. Could they be happening because a) doctors aren't actually examining patients and b) many doctors don't know their arse from their elbow, much less their patients'. No, that's probably a tad unfair, but I am constantly surprised by the way GPs in this country make lightning-fast decisions based on nothing more than a quick glance. Maybe they should have a quota of 'false callouts' above which they have to buy the ambulance crew a round of drinks for every wasted callout.