1. Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
2. Department of Blood Transfusion, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
3. Department of Blood Transfusion, The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250033, P.R. China