1. Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
2. Department of Pediatrics, Taipei Veterans General Hospital, Taipei, Taiwan
3. School of Medicine, National Yang Ming University, Taipei, Taiwan
4. Department of Pediatrics, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taipei, Taiwan
5. Hepatitis Research Center, National Taiwan University Hospital, Taipei, Taiwan