1 Division of Respiratory Therapy and Chest Medicine, Department of Internal Medicine, Cathay General Hospital, Taipei, Taiwan.
2 Department of Pediatrics, Cathay General Hospital, Taipei, Taiwan.
3 Liver Center, Cathay General Hospital, Taipei, Taiwan.
4 Division of Infectious Diseases, Department of Internal Medicine, Cathay General Hospital, Taipei, Taiwan; School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan. Electronic address: infection@cgh.org.tw.