Park J, Chung Y, Lee YM, Nam CW, Nah YW.  Comparative analysis of postoperative outcomes of single-incision cholecystectomy: Propensity score matching of robotic surgery using the da Vinci SP system and da Vinci Xi system vs. laparoscopic surgery.  Ann Hepatobiliary Pancreat Surg -0001;0:-.  https://doi.org/10.14701/ahbps.24-198