Stock Photo - Physician David Bardens arrives at the district court in Ravensburg, Germany, 12 March 2015. A biologist had challenged the idea of pathogenic measles viruses promising an award of 100,000 euro for anyone who could give proof of the contrary. Bardens had delivered the proof, according to his own statement, but Lanka, however, refused to pay. Photo: Karl-Josef Hildenbrand/dpa | usage worldwide. - Ravensburg/Bavaria/Germany

Stock Photo: Physician David Bardens arrives at the district court in Ravensburg, Germany, 12 March 2015. A biologist had challenged the idea of pathogenic measles viruses.

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