1. Department of Seven Orthopaedics ‐ trauma orthopaedics Handan Central Hospital of Hebei Province of China Handan Hebei Province China
2. Department of Gynaecology and Obstetrics Weixian People's Hospital of Handan City in Hebei Province of China Weixian Hebei Province China
3. Department of Management Section Hebei Iron and Steel Group Cold rolling plant of Handan Iron and Steel Company Shijiazhuang Hebei Province China