1. European Scientific Cooperative on Anthroposophic Medicinal Products (ESCAMP), Zechenweg 6, 79111 Freiburg, Germany
2. Louis Bolk Institute, Hoofdstraat 24, 3972 LA Driebergen, Netherlands
3. University of Applied Sciences Leiden, Zernikedreef 11, 2333 CK Leiden, Netherlands
4. Institute for Applied Epistemology and Medical Methodology, Witten/Herdecke University, Zechenweg 6, 79111 Freiburg, Germany
5. Witten/Herdecke University, Gerhard-Kienle-Weg 4, 58313 Herdecke, Germany