1. Department of Imaging, Qingdao Chengyang People’s Hospital, Qingdao, China
2. International Clinic, The Affiliated Qingdao Central Hospital of Qingdao University, The Second Affiliated Hospital of Medical College of Qingdao University, Qingdao, China
3. Community Health Service Center of Government District, Zhangqiu District People’s Hospital, Jinan, China
4. Blood Transfusion Department, Yantai Yuhuangding Hospital, Yantai, China