Vacuum punch biopsy under digital stereotaxic control, a new procedure in percutaneous diagnostic incision and excision biopsy of mammographic findings: initial experience. - Heywang-Köbrunner,S.H.; Schaumlöffel,U.; Gotz,L.; Buchmann,J.; Lampe,D.; Methfessel,G. (Fortschr Röntgenstr, 1997)