1. Ningxia Key laboratory of Clinical and Pathogenic Microbiology, Center of Laboratory Medicine of General Hospital at Ningxia Medical University, Yinchuan, Ningxia 750004, China
2. Department of Pulmonary and Critical Care Medicine, General Hospital, Ningxia Medical University, Yinchuan, Ningxia, China
3. Department of Thoracic Surgery, General Hospital, Ningxia Medical University, Yinchuan, Ningxia, China
4. Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong
5. Human Stem Cell Institute, General Hospital, Ningxia Medical University, Yinchuan, Ningxia, China