1. Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
2. Department of Oncology, Medical Center for Overseas Patient, Nanfang Hospital, Southern Medical University, Guangzhou, China
3. Department of laboratory medicine, Xiamen Key Laboratory of Genetic Testing, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
4. Hospital Infection-Control Department, Shenzhen University General Hospital, Shenzhen, China
5. Department of Respiratory Medicine, Meizhou People's Hospital, Meizhou, China