Major Abdominal Surgery

• SixthSunYetSen — Guangzhou, Guangdong, China

• Huzhou Central Hospital — Huzhou, Zhejiang, China
• The Second Affiliated Hospital of Jiaxing University — Jiaxing, Zhejiang, China
• Jiande First People's Hospital — Meicheng, Zhejiang, China
• The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China. — Hangzhou, China

Not specified

• Rouen University Hospital — Rouen, France

• Centre Hospitalier Lyon Sud, Hospices Civils de Lyon — Pierre-Bénite, France

• CHU Amiens — Amiens, France

• CIUSS-de-l'Est-de-l'Île-de-Montréal (Hôpital Maisonneuve-Rosemont) — Montreal, Quebec, Canada
• Centre Hospitalier de l'Université de Montréal (CHUM) — Montreal, Quebec, Canada

• Mehmet Ali Koc — Ankara, Altindag, Turkey (Türkiye)

• Cleveland Clinic Foundation — Cleveland, Ohio, United States
• The Cleveland Clinic Foundation — Cleveland, Ohio, United States

• CHU de Clermont-Ferrand — Clermont-Ferrand, Auvergne, France