Comment on “Prognostic Effect of Liver Resection in Extended Cholecystectomy for T2 Gallbladder Cancer Revisited: A Retrospective Cohort Study with Propensity-Score-Matched Analysis” - Kojiro Taura, MD, PhD; Hiroaki Terajima, MD, PhD; Etsuro Hatano, MD, PhD (Annals of Surgery Open)