1. Department of Hematology, The First Affiliated Hospital of Kunming Medical University, Hematology Research Center of Yunnan Province, Kunming, Yunnan 650032, P.R. China
2. Department of Ultrasonography, The Affiliated Hospital of Jining Medical College, Jining, Shandong 272000, P.R. China
3. Department of Oncology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China