1. Division of Sleep Medicine, Peking University People’s Hospital, Beijing, China
2. Department of Obstetrics and Gynecology, Peking University People’s Hospital, Beijing, China
3. Department of OB/GYN-Gynecological Oncology, University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland Ohio
4. Peking University School of Nursing, Beijing, China
5. National Institute of Health Data Science, Peking University, Beijing, China
6. Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Case Western Reserve University, and Cleveland Louis Stokes VA Medical Center, Cleveland, Ohio