1. German Coalition for Patient Safety, Berlin
2. Institute of General Practice, Goethe University Frankfurt, Frankfurt am Main
3. Techniker Krankenkasse, Hamburg
4. German Agency for Quality in Medicine, Berlin
5. Asklepios Kliniken GmbH & Co. KGaA, Hamburg, Germany
6. Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland.