1. Department of Pediatrics, Kumamoto-Ashikita Medical Center for the Severely Disabled, Kumamoto, Japan
2. Junshin Clinic Bile Acid Institute, Tokyo, Japan
3. Department of Pediatrics, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, Kyoto, Japan
4. Hepatology Department, National Children’s Hospital, Hanoi, Vietnam
5. Faculty of Pharmaceutical Science, Health Science University of Hokkaido, Hokkaido, Japan
6. Laboratory of Molecular Pharmacokinetics, Graduate School of Pharmaceutical Science, The University of Tokyo, Tokyo, Japan.