1. Department of Laboratory Science, School of Laboratory Medicine, Tianjin Medical University, Tianjin 300203, P.R. China
2. Key Laboratory of Computer Vision and System of Ministry of Education, School of Computer Science and Engineering, Tianjin University of Technology, Tianjin 300384, P.R. China
3. Department of Clinical Laboratory, Tianjin Chest Hospital, Tianjin 300051, P.R. China
4. Department of Bone Science, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China