1. Second Department of Geriatrics, Hebei Medical University and Hebei General Hospital, Shijiazhuang 050051, Hebei, China
2. Second Department of Geriatrics, Hebei General Hospital, Shijiazhuang 050051, Hebei, China
3. Medical Examination Center, Hebei General Hospital, Shijiazhuang 050051, Hebei, China
4. Ultrasound Department, Hebei General Hospital, Shijiazhuang 050051, Hebei, China
5. Vascular Surgery, Hebei General Hospital, Shijiazhuang 050051, Hebei, China
6. Ultrasound Department, Hebei Medical University and Hebei General Hospital, Shijiazhuang 050051, Hebei, China