Fig. 3From: Endoscopy-assisted surgery for the management of benign breast tumors: technique, learning curve, and patient-reported outcome from preliminary 323 proceduresOperation learning curve. a Unilateral vs. bilateral OP learning curve. b Unilateral OP time: divided into five groups (43–50 procedures in each group). Comparison of the average OP time and standard deviation in each group (p < 0.04). c First 50 procedures vs. last 50 procedures in the OP learning curveBack to article page