1 Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan; Department of Pediatrics, School of Medicine, Chung Shan Medical University, Taichung, Taiwan.
2 School of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Surgery, Chung Shan Medical University Hospital, Taichung, Taiwan.
3 Division of Hepatology and Gastroenterology, Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan; Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung, Taiwan. Electronic address: anitayen1971@yahoo.com.tw.