1. Department of Dentistry and Oral Surgery, Hyogo College of Medicine, Nishinomiya City, Hyogo, Japan
2. Faculté de medicine dentaire, Université de Montréal, Montréal, Canada
3. Centre d'étude du Sommeil et des Rythmes Biologiques, Hôpital du Sacré-Coeur de Montréal, Montréal, Canada
4. Department of Oral Anatomy and Neurobiology, Graduate School of Dentistry, University of Osaka, Osaka, Japan