Published on in Vol 7, No 2 (2020): Apr-Jun
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/15581, first published
.
1 Product Development Group Zurich, Institute of Design, Materials and Fabrication, Department of Mechanical and Process Engineering, Swiss Federal Institute of Technology in Zurich, Zürich, Switzerland
2 Peripal AG, Zürich, Switzerland