1. Department of Pulmonary and Critical Care Medicine, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
2. Guangdong Provincial Key Laboratory of Biomedical Imaging and Guangdong Provincial Engineering Research Center of Molecular Imaging, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
3. Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, Jilin, China
4. Department of Pulmonary and Critical Care Medicine, The Second Hospital of Jilin University, Changchun, Jilin, China