1 | Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, China |
2 | Health Management Center, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, China |
3 | Sleep Medicine Center, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, China |
4 | Department of Cardiology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, China |