Department of Hematology, Qilu Hospital, Shandong University, 107 West Wenhua Road, Jinan, Shandong 250012, PR China. Department of Hematology, Qilu Hospital, Shandong University, 107 West Wenhua Road, Jinan, Shandong 250012, PR China. Electronic address: Liuxingrant@163.com. Department of Hematology, Qilu Hospital, Shandong University, 107 West Wenhua Road, Jinan, Shandong 250012, PR China; Department of Hematology, Taian Central Hospital, Taian, PR China. Department of Orthopedics, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China. Shandong Provincial Key Laboratory of Immunohematology, Qilu Hospital, Shandong University, 107 West Wenhua Road, Jinan, Shandong 250012, PR China. Reproductive Center, Rizhao Maternal & Child Health Hospital, Rizhao, PR China. Department of Hematology, Qilu Hospital, Shandong University, 107 West Wenhua Road, Jinan, Shandong 250012, PR China; Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, 107 West Wenhua Road, Jinan, Shandong 250012, PR China. Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, 107 West Wenhua Road, Jinan, Shandong 250012, PR China. Electronic address: qlhouming@sina.com.