1. Department of Blood Transfusion, Yantaishan Hospital, Yantai 264000, China
2. Department of Stomatology, Chengyang People’s Hospital, Chengyang 266109, China
3. Department of Surgery, Zhangqiu District People’s Hospital, Jinan 250200, China
4. Department of Gynaecology, Zhangqiu District People’s Hospital, Jinan 250200, China
5. Medical Insurance Department, Zhangqiu District People’s Hospital, Jinan 250200, China
6. PIVAS, Weifang People’s Hospital, Weifang 261041, China