Kaplan–Meier curves for disease-free and overall survival a, Disease-free survival for yStage I or II patients with neoadjuvant therapy (NAT) and stage I or II patients without neoadjuvant therapy (non-NAT). b, Local Recurrence-free Survival for NAT and non-NAT. c, Overall survival for NAT and non-NAT. d, Disease-free survival for yStage I or II patients with (AT) and without adjuvant chemotherapy (non-AT). e, Local Recurrence-free Survival for AT and non-AT. f, Overall survival for AT and non-AT.