1. German Aerospace Center DLR, Institute of Aerospace Medicine, Köln, Germany.
2. Museum für Naturkunde, Humboldt-Universität zu Berlin, Berlin, Germany.
3. Institut für Botanik, Heinrich-Heine-Universität, Düsseldorf, Germany.
4. Ernst-Mach-Institut für Kurzzeitdynamik, Fraunhofer-Gesellschaft, Freiburg, Germany.
5. Open University, Milton Keynes, United Kingdom.
6. German Collection of Microorganism and Cell Cultures GmbH (DSMZ), Braunschweig, Germany.
7. Institute for Dynamics of Geospheres, Russian Academy of Science, Moscow, Russia.
8. Planetary Science Institute, Tucson, Arizona.