1. School of Computer Science, College of Computing, Georgia Institute of Technology, Atlanta, GA 30332, USA
2. Department of Biomedical Informatics, School of Medicine, Emory University, Atlanta, GA 30322, USA
3. Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, GA 30322, USA
4. Jean and Paul Amos Parkinson’s Disease and Movement Disorders Program, Department of Neurology, School of Medicine, Emory University, Atlanta, GA 30322, USA