1. School of Electrical Engineering and Computer Science,
2. Institute for Social Science Research, and
3. Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia;
4. Division of Sleep and Circadian Disorders, Department of Medicine, Brigham & Women’s Hospital, Harvard Medical School, Boston, Massachusetts;
5. Department of Applied Physics, University of Eastern Finland, Kuopio, Finland; and
6. Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland