About the Authors
Départment de Biologie Cellulaire et de Morphologie, Lausanne, Switzerland
Department of Neurobiology, Harvard Medical School, Boston, Massachusetts, United States of America
Faculté des Sciences de la Vie, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland
The authors have declared that no competing interests exist.
EW and GWK conceived and designed the experiments. CG, CQ, PS, HH, and GWK performed the experiments. CG, CQ, PS, and HH analyzed the data. HH and EW contributed reagents/materials/analysis tools. GWK wrote the paper.