Biliary Tract Diseases

• Asan Medical Center, University of Ulsan College of Medicine — Seoul, South Korea

• Department of Surgery School of Medical Sciences, Universiti Sains Malaysia — Kubang Kerian, Kelantan, Malaysia

• Rajavithi Hospital — Bangkok, Thailand

• Cedars-Sinai Medical Center, Samuel Oschin Comprehensive Cancer Institute — Los Angeles, California, United States
• UCLA Hematology-Oncology Clinic (Westwood) — Los Angeles, California, United States
• University of California San Diego Moores Cancer Center — San Diego, California, United States
• University of California San Francisco Medical Center — San Francisco, California, United States

• Levine Children's Hospital at Carolinas HealthCare System — Charlotte, North Carolina, United States

• "Attikon" University General Hospital — Athens, Attica, Greece

• Advanced Endoscopy Research, Robert Wood Johnson Medical School Rutgers University — New Brunswick, New Jersey, United States
• Baylor Saint Luke's Medical Center — Houston, Texas, United States
• Houston Methodist Hospital — Houston, Texas, United States
• Department of Advanced Interventional Endoscopy, Universitair Ziekenhuis Brussel (UZB)/Vrije Universiteit Brussel (VUB) — Brussels, Belgium

• Asan Medical Center, University of Ulsan College of Medicine — Seoul, South Korea

Not specified

• Yonsei University Health System, Severance Hospital — Seoul, South Korea