1. School of Kinesiology, Faculty of Medicine, Universidad Finis Terrae, Santiago, Chile
2. Department of Physical Therapy, University of Illinois at Chicago, College of Applied Health Sciences, Chicago, IL, USA
3. Department of Neurology, Oregon Health and Science University, Portland, OR, USA
4. Department of Physical Medicine and Rehabilitation, Northwestern University, Evanston, IL, USA
5. College of Optometry, Pacific University, Forest Grove, OR, USA
6. AMES Technology Inc, Portland, OR, USA