1 Department of Hematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.
2 Department of Laboratory Medicine, Beijing Ludaopei Hospital, Beijing, 100176, China.
3 Department of Clinical Laboratory, The District People's Hospital of Zhangqiu, Jinan, 250200, Shandong Province, China.
4 Department of Clinical Laboratory, Xi'an Children's Hospital, Xi'An, 710002, Shaanxi Province, China.
5 Department of Clinical Laboratory, Sichuan Provincial Maternity and Child Health Care Hospital, The Affiliated Women's and Children's Hospital of Chengdu Medical College, Chengdu, 610000, Sichuan Province, China. xiaolfran@163.com.