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Formula One legend, Michael Schumacher turned 45 on Friday, while lying comatose in a French hospital after suffering critical head injuries in a ski accident.
Doctors and family members were tight-lipped on Thursday about the condition of the German racing great, who has been hospitalised since Sunday, when he slammed his head against a rock while skiing in the French Alps.
There have been conflicting statements about the speed the seven-time world racing champion was going when the tragedy befell him in the Meribel ski resort, where he has a property.
The rock impact split the helmet Schumacher was wearing in two, according to a source close to the investigation.
He has had two operations to release bleeding and pressure on his brain.