1. Apple Inc., Cupertino, CA 95014, USA.
2. Renaissance School of Medicine, Stony Brook University, Stony Brook, NY 11794, USA.
3. Department of Neurology, Massachusetts General Hospital, Boston, MA 02114, USA.
4. Department of Neurology, Harvard Medical School, Boston, MA 02115, USA.
5. Parkinson’s Disease and Movement Center of Silicon Valley, Menlo Park, CA 94025, USA.
6. Silicon Valley Parkinson’s Center, Los Gatos, CA 95032, USA.