1. Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical College, Wenzhou 325000, PR China
2. Department of Laboratory Medicine, Shaoxing Municipal Women and Children Hospital, Shaoxing 312000, PR China
3. Department of Respiratory Medicine, The First Affiliated Hospital of Wenzhou Medical College, Wenzhou 325000, PR China
4. Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical College, Wenzhou 325000, PR China
5. Division of Infectious Diseases, Department of Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
6. Key Laboratory of Medical Molecular Virology of Ministries of Education and Health, Institute of Medical Microbiology and Institutes of Biomedical Sciences, Shanghai Medical School of Fudan University, Shanghai 200032, PR China