About the Authors

Christian Federau

Affiliation Dept of Radiology, Section of Neuroradiology, Stanford University, Stanford, California, United States of America

Daniel Gallichan


Affiliation CIBM, EPFL, Lausanne, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DG. Performed the experiments: DG. Analyzed the data: CF. Wrote the paper: CF DG.