About the Authors
- Frank Schweitzer
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*To whom correspondence should be addressed. E-mail: fschweitzer@ethz.ch
Affiliation Chair of Systems Design, ETH Zurich, Zurich, Switzerland
- Robert Mach
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Affiliation Chair of Systems Design, ETH Zurich, Zurich, Switzerland
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Analyzed the data: RM. Wrote the paper: FS.