Sex differences in tumor characteristics, treatment, and outcomes of gastric and esophageal cancer surgery: nationwide cohort data from the Dutch Upper GI Cancer Audit.

"Declarations Conflict of interestWagner has received consulting fees from BMS, Servier Suisse, Merck, MSD, Bayer, EMD Serono, Lilly, Celgene, Shire, and Pfizer, non-financial support (for congress participations) from Sanofi, Astra-Zeneca, AbbVIE, and Ipsen, and an educational grant from Roche to EORTC. Verhoeven has received unrestricted research grants from BMS and Roche. Van Laarhoven has served as a consultant for BMS, Celgene, Lilly, Merck, Nordic, and Servier, and has received unrestricted research funding from Bayer, BMS, Celgene, Lilly, Merck Serono, MSD, Nordic, Philips, Roche, and Servier. Van Berge Henegouwen reports research grants from Olympus and Stryker, in addition to consulting fees from Medtronic, Mylan, and Johnson and Johnson. Lemmens has received unrestricted research grants and educational grants from Roche. The remaining authors have no conflict of interest to report. Conflict of interest Wagner has received consulting fees from BMS, Servier Suisse, Merck, MSD, Bayer, EMD Serono, Lilly, Celgene, Shire, and Pfizer, non-financial support (for congress participations) from Sanofi, Astra-Zeneca, AbbVIE, and Ipsen, and an educational grant from Roche to EORTC. Verhoeven has received unrestricted research grants from BMS and Roche. Van Laarhoven has served as a consultant for BMS, Celgene, Lilly, Merck, Nordic, and Servier, and has received unrestricted research funding from Bayer, BMS, Celgene, Lilly, Merck Serono, MSD, Nordic, Philips, Roche, and Servier. Van Berge Henegouwen reports research grants from Olympus and Stryker, in addition to consulting fees from Medtronic, Mylan, and Johnson and Johnson. Lemmens has received unrestricted research grants and educational grants from Roche. The remaining authors have no conflict of interest to report."

"Funding No funding was received for this study."