Funding Information: The authors thank ESGO, ESTRO, and ESP for their support. The authors also thank the 155 international reviewers (physicians and patient representatives, see Appendix 2 in Online Supplemental File 2) for their valuable comments and suggestions. The authors thank the ESGO office, especially Kamila Macku, Tereza Cicakova, and Kateřina Šibravová, provided invaluable logistical and administrati...