1. Britton Chance Center for Biomedical Photonics-MoE Key Laboratory for Biomedical Photonics, Advanced Biomedical Imaging Facility, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
2. Joint Wuhan Blood Center-Huazhong University of Science and Technology, Hematology Optical Imaging Center, Institute of Blood Transfusion of Hubei Province, Wuhan Blood Center, Wuhan 430030, P. R. China