Effect of preoperative chemotherapy on the histopathological classification of gastric cancer.

"Declarations Conflicts of interestThe authors declare that they have no conflict of interest. Ethical approvalThe D1/D2 study and CRITICS trial were approved by the medical ethics committees of the Leiden University Medical Centers and The Netherlands Cancer Institute, respectively [11, 17]. All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. Informed consent to be included in the D1/D2 study or CRITICS trial was obtained from all patients. Conflicts of interest The authors declare that they have no conflict of interest."

"Author contributions: IAC: Conceptualization, Data curation, Formal analysis, Investigation, Writing–original draft; HDB: Data curation, Writing–review & editing; KW: Writing–review & editing, FP: Writing–review & editing; PL: Writing–review & editing; MN: Writing–review & editing; KS: Methodology, Writing–review & editing; EM-KK: Data curation, Writing–review & editing; HHH: Writing–review & editing; CJHvdV: Writing–review & editing; MV: Funding acquisition, Writing–review & editing; JWvS: Writing–review & editing; AC: Funding acquisition, Conceptualization, Data curation, Methodology, Investigation, Writing–review & editing, Supervision; NCTvG: Conceptualization, Data curation, Methodology, Investigation, Writing–review & editing, Supervision."