1. Department of Blood Transfusion, Qilu Hospital Huantai Branch, Zibo, Shandong 256400, P.R. China
2. Clinical Laboratory, Qilu Hospital Huantai Branch, Zibo, Shandong 256400, P.R. China
3. Outpatient Dressing Room, Zibo Central Hospital, Zibo, Shandong 255000, P.R. China
4. Department of Pathology, Zibo Central Hospital, Zibo, Shandong 255000, P.R. China