1. Department of PathologyKeio University School of MedicineTokyo Japan
2. Department of Gastroenterology and MetabologyEhime University Graduate School of MedicineEhime Japan
3. Department of GastroenterologyIkeda Municipal HospitalOsaka Japan
4. Department of Hepatology and PancreatologyKawasaki Medical SchoolOkayama Japan
5. Department of HepatologySapporo‐Kosei General HospitalHokkaido Japan
6. Department of General Internal Medicine 2Kawasaki Medical SchoolOkayama Japan
7. Kurume University Research Center for Innovative Cancer therapyFukuoka Japan
8. Research Center for Hepatitis and ImmunologyNational Center for Global Health and MedicineChiba Japan