José Luis Calvo Guirado has entered the world's top 20 scientists with the most retired studies. A dozen magazines have already retracted 34 of his works, plagued by anomalies.

The dentist assures that he has hired “an international law firm” to defend himself on a case-by-case basis. “I have put it in the hands of international justice. They have all been reported, I am waiting for the resolution,” he says, without offering more details.