Biliary Tract Diseases

• Peking Union Medical College Hospital — Beijing, Beijing Municipality, China
• The 307th Hospital of Military Chinese People's Liberation Army — Beijing, Beijing Municipality, China
• Heilongjiang Cancer Hospital — Harbin, Heilongjiang, China
• Shanghai Zhongshan Hospital — Shanghai, Shanghai Municipality, China

• Södersjukhuset — Stockholm, Stockholm County, Sweden

• King Abulaziz University — Jeddah, Mecca Region, Saudi Arabia

• Kyoto University Hospital — Kyoto, Japan

• Osaka University, Graduate School of Medicine — Osaka, Japan

• Bursa Yuksek Ihtisas Training and Research Hospital — Bursa, Turkey (Türkiye)
• Erzincan University — Erzincan, Turkey (Türkiye)
• Bezmialem Vakif University — Istanbul, Turkey (Türkiye)
• Sisli Etfal Training and Research Hospital — Istanbul, Turkey (Türkiye)

Not specified

• North Shore University Hospital — Manhasset, New York, United States
• LIJ Medical Center- NSLIJ Health System — New Hyde Park, New York, United States

• CHA Bundang Medical Center — Seongnam, Bundang-gu, South Korea
• Gangnam Severance Hospital — Seoul, Gangnam-gu, South Korea
• Dongtan Sacred Heart Hospital — Hwaseong-si, Gyeonggi-do, South Korea
• In Ha University Hospital — Incheon, Jung-gu, South Korea

• UPMC Hillman Cancer Center — Pittsburgh, Pennsylvania, United States