Department of Infectious Disease Qingdao Municipal Hospital Qingdao University Qingdao Shandong China;
Clinical Research Center Qingdao Municipal Hospital Qingdao University Qingdao Shandong China;
Digestive Disease Key Labo-ratory of Qingdao Qingdao Shandong China;
Department of Infectious Disease Qingdao Municipal Hospital Qingdao University Qingdao Shandong China;
Department of Infectious Disease Qingdao Municipal Hospital Qingdao University Qingdao Shandong China;
Department of Infectious Disease Qingdao Municipal Hospital Qingdao University Qingdao Shandong China;
Department of Infectious Disease Qingdao Municipal Hospital Qingdao University Qingdao Shandong China;
Digestive Disease Key Labo-ratory of Qingdao Qingdao Shandong China;
Department of Infectious Disease Qingdao Municipal Hospital Qingdao University Qingdao Shandong China;
Digestive Disease Key Labo-ratory of Qingdao Qingdao Shandong China;