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. Author manuscript; available in PMC: 2012 Mar 1.
Published in final edited form as: Cancer. 2009 Feb 15;115(4):716–724. doi: 10.1002/cncr.24085

Figure 1. Initial Breast Biopsy Technique over Time*.

Figure 1

* One-step surgery defined as surgical excision of breast tissue without a claim for needle or surgical biopsy. Cochran-Armitage test for trend significant (z test -24.69, both p < .0001).