1. Department of Sleep Medicine, Mental Health Center of Shantou University, Shantou, China
2. Sleep Medicine Center, Shantou University Medical College, Shantou, China
3. Laboratory of Human Virology and Oncology, Shantou University Medical College, Shantou, China
4. Sleep Research Laboratory, Center for Integrative Neuroscience and Inflammatory Diseases, Department of Pathology and Anatomy, Eastern Virginia Medical School, Norfolk, Virginia
5. Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, Pennsylvania
6. Sleep Medicine Center, Mental Health Center, West China Hospital, Sichuan University, Chengdu, China