1. Institute for Rehabilitation and Performance Technology; Division of Mechanical Engineering; Department of Engineering and Information Technology; Bern University of Applied Sciences; Burgdorf Switzerland
2. ARTORG Center for Biomedical Engineering Research; Gerontechnology and Rehabilitation Research Group; University of Bern; Bern Switzerland
3. Department of Physical Medicine and Rehabilitation; Faculty of Medicine; Khon Kaen University; Khon Kaen Thailand