1. Department of Respiratory Medicine,
2. Department of Respiratory Care and Sleep Control Medicine, and
3. Department of Respiratory Medicine, Nara Medical University, Nara, Japan;
4. Department of Respiratory Medicine and Allergology, Kindai University, Osaka, Japan;
5. Center for Genomic Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan;
6. Graduate School of Public Health, Shizuoka Graduate University of Public Health, Shizuoka, Japan; and
7. Division of Sleep Medicine, Department of Sleep Medicine and Respiratory Care, Nihon University School of Medicine, Chiyoda, Japan