1. Kluyver Laboratory for Biotechnology, Delft University of Technology, Delft
2. Department of Microbiology, Faculty of Science, Radboud University Nijmegen, Nijmegen
3. Department of Chemical Engineering, University of Santiago de Compostela, Santiago de Compostela, Spain
4. Department of Microbial Ecology, University of Vienna, Vienna, Austria
5. Department of Biogeochemistry, Royal Netherlands Institute for Sea Research (NIOZ), Den Burg, Texel, The Netherlands
6. Max Planck Institute for Marine Microbiology, Bremen, Germany
7. Department of Microbial Ecology, University of Aarhus, Aarhus, Denmark