1. Department of Endocrinology Hebei Geriatric Hospital Shijiazhuang Hebei China
2. Department of Cardiovascular Medicine Hebei Geriatric Hospital Shijiazhuang Hebei China
3. Department of General Surgery Hebei Geriatric Hospital Shijiazhuang Hebei China
4. Department of Geriatrics The First Hospital of Hebei Medical University Shijiazhuang Hebei China