Oi...I drive an ambulance part time for the out of hours GP...
In fact I prolly qualify for GP now...I know all the right questions to ask and how to take temperature and test oxygen saturation levels. Most of the ailments can be diagnosed by blood pressure test, prodding the tummy, listening to the chest, looking at the tongue and asking 'how're yer bowels and waterworks?' Then administer antibiotics or pain killers as necessary...
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...unless the patient is dead of course...