Gastrointestinal Neoplasms

• Bang Wool Eom — Goyang-si, Gyeonggi-do, South Korea
• Soonchunhyang University College of Medicine — Bucheon-si, South Korea
• Dongnam Institute of Radiological and Medical Science — Busan, South Korea
• Gyeongsang National University Changwon Hospital — Changwon, South Korea

• Samsung medical center — Seoul, South Korea

• The Sarah Cannon Research Institute — Nashville, Tennessee, United States
• The University of Texas MD Anderson Cancer Center — Houston, Texas, United States
• Leuven Cancer Institute — Leuven, Belgium
• Princess Margaret Cancer Center — Toronto, Ontario, Canada

• Cancer hospital, Chinese academy of medical sciences — Beijing, Beijing Municipality, China

• Erasmus MC — Rotterdam, South Holland, Netherlands
• Catharina Hospital — Eindhoven, Netherlands

• Hospital Evangélico do Cachoeiro do Itapemirim — Cachoeiro de Itapemirim, Espírito Santo, Brazil
• Hospital Universitário de Brasília — Brasília, Federal District, Brazil
• Santa Casa de Misericórdia de BH — Belo Horizonte, Minas Gerais, Brazil
• Hospital Erasto Gaetner — Curitiba, Paraná, Brazil

• WellSpan — York, Pennsylvania, United States

• Ohio State University Comprehensive Cancer Center — Columbus, Ohio, United States

• Wageningen University & Research — Wageningen, Gelderland, Netherlands

Not specified