Biliary Tract Diseases

• Chihuahua City General Hospital "Dr. Salvador Zubirán Anchondo" Chihuahua, Chihuahua, Mexico 31000 — Chihuahua City, Chihuahua, Mexico

• Qassim University Medical City — Buraidah, Al-Qassim Region, Saudi Arabia

• Pakistan Railway Hospital — Rawalpindi, Punjab Province, Pakistan

• Seoul National University Hospital — Seoul, South Korea

• Bns Patenga — Dhaka, Chattogram, Bangladesh

Not specified

• Massachusetts General Hospital — Boston, Massachusetts, United States

• University of Alberta — Edmonton, Alberta, Canada

• Baptist Health South Miami — Miami, Florida, United States
• Northwell Health Long Island Jewish Hospital — New Hyde Park, New York, United States
• New Hanover Regional — Wilmington, North Carolina, United States

• Gastroenterology Unit, Hospital of Imola — Imola, Italy