1. Departments of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
2. Institute of Bacterial Resistance, Anhui Medical University, Hefei, Anhui, China
3. Anhui Center for Surveillance of Bacterial Resistance, Hefei, Anhui, China
4. Departments of Center Laboratory, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China