1. Institut für Hydrobiologie, Technische Universität Dresden, Dresden, Germany
2. Dipartimento di Biologia, Università di Pisa, Pisa, Italy
3. Department of Cytology and Histology, St. Petersburg State University, St. Petersburg, Russia
4. Mikrobiologie, Institut für Biologie II, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
5. Indiana University, Bloomington, Indiana, USA
6. National Center for Genome Analysis Support, Bloomington, Indiana, USA