As many as four tourists – including TV doctor Michael Mosley \- have died in Greece in just a matter of days as a record heatwave threatens to plunge the Mediterranean state into crisis. Holidaymakers looking to visit the country have been handed urgent warnings as temperatures have soared to nearly 50C – while three more people have gone missing alongside the tragic deaths. The heatwave in the country – classed as temperatures higher than 38C for three days or more – is the earliest in its history, and has wreaked havoc from the capital Athens to its islands in the Aegean Sea. After Mosley, …