1. Osaka University Graduate School of Dentistry, Department of Oral Anatomy and Neurobiology, Suita, Osaka, Japan
2. Matsumoto Dental University, Department of 1st Fixed Prosthodontics, Shiojiri, Nagano, Japan
3. Tokyo Dental College, Department of Clinical Oral Health Science, Mihama-Ku, Chiba, Japan
4. Osaka Kaisei Hospital Sleep Medical Center, Yodogawu-Ku, Osaka, Japan
5. Osaka University Health Care Center, Suita, Osaka, Japan
6. Matsumoto Dental University, Graduate School of Oral Medicine, Department of Oral and Maxillofacial Biology, Shiojiri, Nagano, Japan