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Figure 3. Surgical and postoperative outcomes compared between OLR and MIS groups in grade I. (A) Operation time is not significantly different; (B) Blood loss, (C) complication of Clavien Dindo 2 or more, and (D) postoperative hospital stay are better in MIS group. The numbers of cases of complication of Clavien Dindo 2 or more were 78 cases (34.8%) in OLR and 13 cases (12.4%) in MIS group (C). OLR: Open liver resection; MIS: minimally invasive surgery.