Published Online: Apr 11, 2018
Page range: 3 - 7
DOI: https://doi.org/10.1515/sjs-2018-0001
© 2018 Felix Bühlmann et al., published by De Gruyter Open
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Felix Bühlmann
University of Lausanne,
Lausanne
Marion Beetschen
University of Lausanne,
Lausanne