1. Department of Clinical Hematology, The Medical College of Qingdao University, Qingdao, People’s Republic of China
2. Department of Clinical Laboratory, The Qingdao Central Hospital, Qingdao, People’s Republic of China
3. Department of Blood Transfusion, The Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
4. Prenatal Diagnosis Center, The Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China
5. Department of Hematology, The Affiliated Hospital of Qingdao University, Qingdao, People’s Republic of China