Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi’an CDC, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Chest Hospital, Ankang Central Hospital, Hanzhong Central Hospital, Hanzhong Central Hospital, The Second People's Hospital of Hanzhong, Weinan Central Hospital, Baoji Central Hospital, Tongchuan People’s Hospital, The Second People's Hospital of Yanan, Shangluo Central Hospital, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - Shaanxi Clinical Research Center of Infectious Diseases, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - Department of Infectious Diseases, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU), Xi'an Jiaotong University (XJTU) - First Affiliated Hospital, Xi'an Jiaotong University (XJTU) - Shaanxi Clinical Research Center of Infectious Diseases and Xi'an Jiaotong University (XJTU) - Shaanxi Clinical Research Center of Infectious Diseases