1. Department of Central Laboratory, The General Hospital of Western Theater Command, Chengdu, Sichuan, P. R. China
2. Faculty of Medical, Southwest Jiaotong University, Chengdu, Sichuan, P. R. China
3. Department of Laboratory Medicine, The Third People’s Hospital of Chengdu/Affiliated Hospital of Southwest, Jiaotong University, Chengdu, Sichuan, P. R. China