About the Authors
Laboratory of Computer and Information Science, Helsinki University of Technology, Espoo, Finland
Department of Geology and Institute of Biotechnology, University of Helsinki, Helsinki, Finland
HIIT Basic Research Unit, University of Helsinki and Helsinki University of Technology, Helsinki, Finland
The authors have declared that no competing interests exist.
KP, MF, and HM conceived and designed the experiments. KP performed the experiments. KP, MF, and HM analyzed the data. KP, MF, and HM contributed reagents/materials/analysis tools. KP, MF, and HM wrote the paper.