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Contingent Liabilities (Details) - EUR (€)
Aug. 07, 2021
Dec. 31, 2020
Nov. 08, 2018
Universitair Medisch Centrum Utrecht      
Contingent Liabilities      
Amount in dispute   € 1,300,000 € 880,000
Prof. Dr. Peter Bauer      
Contingent Liabilities      
Aggregate amount in question € 42,268.50