1. Department of Medical Microbiology, University Medical Center Groningen-University of Groningen, 9700RB Groningen, The Netherlands
2. Institute for Systems Biotechnology, Saarland University, 66123 Saarbrücken, Germany
3. Department of Science, Technology and Innovation, Kobe University, 657-8501 Kobe, Japan
4. Institute for Industrial Genetics, University of Stuttgart, 70569 Stuttgart, Germany