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Logo of kjpainThis ArticleAims and ScopeInstructions to AuthorsE-SubmissionThe Korean Journal of Pain
Published online 2012 April 4. doi: 10.3344/kjp.2012.25.2.81

Table 1

Mean Distance from the Midline and Mean Angle From the Skin for the Needle Entry Point

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Distance and angle difference (%): the mean absolute value of the percentile change from preoperative to postoperative distance from the midline and angle from the skin.