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Distribution of lobectomy in U-VATS and M-VATS. (A) M-VATS group and (B) U-VATS group. RU, right upper; RM, right middle; RL, right lower; LU, left upper; LL, left lower; U-VATS, uniportal video-assisted thoracoscopic surgery; M-VATS, multi-port video-assisted thoracoscopic surgery.
