Assistant Professor
Department of GI Medical Oncology
University of Texas
MD Anderson Cancer Center
Houston
TX
MBM declares that she has no competing interests.
Dr Mariela Blum Murphy would like to gratefully acknowledge Dr Valerie Reed and Dr Prajnan Das, previous contributors to this topic.
Director
Gastrointestinal Radiation Oncology
Massachusetts General Hospital Cancer Center
Boston
MA
TH declares that he has no competing interests.
Head of Department
Department of Gastroenterology
Sana Klinikum
Remscheid
Germany
AL declares that he has no competing interests.
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