1. Outpatient Dressing Room, Beijing Huairou Hospital, Huairou 101400, Beijing, China
2. Department of Respiration, Beijing Huairou Hospital, Huairou 101400, Beijing, China
3. Department of General Surgery, Beijing Chaoyang Hospital, Chaoyang 100015, Beijing, China
4. Department of Obstetrics and Gynecology, Beijing Huairou Hospital, Huairou 101400, Beijing, China
5. Department of Endocrine, Beijing Huairou Hospital, Huairou 101400, Beijing, China