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Lorenz, D., Bruns, C. J. and Buhr, H. J. (2021). Statement of the surgical working group upper gastrointestinal tract (CAOGI) and the quality committee of the German Society for General and Visceral Surgery (DGAV) on the modified minimum caseload requirements for esophagus resection. Chirurg, 92 (11). S. 1021 - 1025. HEIDELBERG: SPRINGER HEIDELBERG. ISSN 1433-0385