1. Università della Svizzera italiana, Lugano, Switzerland
2. Institute for Research in Biomedicine, Bellinzona, Switzerland
3. Department of Biology, Swiss Federal Institute of Technology, Zurich, Switzerland
4. Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
5. École Polytechnique Fédérale de Lausanne, School of Life Sciences, Lausanne, Switzerland