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Early detection of breast cancer: benefits and risks of supplemental breast ultrasound in asymptomatic women with mammographically dense breast tissue. A systematic review

Monika Nothacker, Volker Duda, Markus Hahn, Mathias Warm, Friedrich Degenhardt, Helmut Madjar, Susanne Weinbrenner and Ute-Susann Albert*

BMC Cancer 2009, 9:335  doi:10.1186/1471-2407-9-335