Ampullary Carcinoma

• The Second Affiliated Hospital of Army Medical University (Xinqiao Hospital) — Chongqing, Chongqing Municipality, China
• Nanfang Hospital, Southern Medical University — Guangzhou, Guangdong, China
• West China Hospital, Sichuan University — Chengdu, Sichuan, China
• The People's Hospital of Jianyang City — Jiancheng, Sichuan, China

• Liver and GIT hospital , Minia University — Minya, Minya Governorate, Egypt

• Sidney Kimmel Comprehensive Cancer Center — Baltimore, Maryland, United States

Not specified

Not specified

• Beijing Friendship Hospital Affiliated to Capital University of Medical Sciences — Beijing, Beijing Municipality, China
• The First Affiliated Hospital of Guangxi Medical University — Nanning, Guangxi, China
• The General Hospital of Shenyang Military Region — Shenyang, Liaoning, China
• Eastern Hepatobiliary Surgery Hospital — Shanghai, Shanghai Municipality, China

• Research Site — Brescia, BS, Italy
• Research Site — Florence, FI, Italy
• Research Site — Genova, GE, Italy
• Research Site — Milan, Mi, Italy