1. Institute for Biomechanics, ETH Zurich Zurich Switzerland
2. Department of Osteoporosis Bern University Hospital, University of Bern Bern Switzerland
3. Department of Orthopedics and Trauma Surgery Medical University of Innsbruck Innsbruck Austria
4. Department of Radiology Medical University Innsbruck Innsbruck Austria
5. Clinical Medical Department DePuy Synthes Zuchwil Switzerland
6. Institute for Information Systems FHNW University of Applied Sciences and Arts Northwestern Switzerland Olten Switzerland