This author has not been identified. Look up 'Karsten Held' in GoogleThis author has not been identified. Look up 'Elena Rota Kops' in GoogleThis author has not been identified. Look up 'Bernd J. Krause' in GoogleThis author has not been identified. Look up 'William M. Wells III' in GoogleThis author has not been identified. Look up 'Ron Kikinis' in GoogleThis author has not been identified. Look up 'Hans-W. Müller-Gärtner' in Google