1. Institute for Molecular Biology, University Medical Center Göttingen, Georg-August–University, Göttingen, Germany
2. RNA Molecular Biology and Center for Microscopy and Molecular Imaging, F.R.S./FNRS, Université Libre de Bruxelles, Charleroi-Gosselies, Belgium
3. Institute for Molecular Biosciences, Goethe University, Frankfurt am Main, Germany
4. Göttingen Centre for Molecular Biosciences, Georg-August–University, Göttingen, Germany