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S2
Pagana, Kathleen D. & Pagana, Timothy J. (2001). Mosby’s Diagnostic and Laboratory Test Reference 5th Edition: Mosby, Inc., Saint Louis, MO.

S3
Check, W. (2002 February). Making the call on HER2 testing methods [70 paragraphs]. CAP Today, In the News [On-line journal]. Available FTP: http://www.cap.org/html/publications/feature.html

S4
Check, W. (2002 February). Serum HER2 testing [5 paragraphs]. CAP Today, In the News [On-line journal]. Available FTP: http://www.cap.org/html/publications/sidebar1.html

S5
ASCO (1996). c-erbB-2 as a Marker for Breast Cancer [13 paragraphs]. American Society for Clinical Oncology [On-line guideline]. Available FTP: http://www.asco.org/prof/pp/html/guide/tumor/m_tumor14.htm

S6
ACS (2001). Immunotherapy with Trastuzumab (Herceptin) [3 paragraphs]. American Cancer Society [On-line information]. Available online

S7
ACS (2001). How is Breast Cancer Diagnosed? [43 paragraphs]. American Cancer Society, Cancer Reference Information [On-line information]. Available online

S8
Locke, J. (2001 February). HER2/neu Testing [17 paragraphs]. American Association for Clinical Chemistry, Strategies [Newsletter]. Available for AACC (http://www.aacc.org)

S9
Yazifi, H., and Gown, A. (2002 June). Controversies and guidelines in tissue-based HER-2/neu testing in breast cancer [24 paragraphs]. Medical Laboratory Observer [Journal], Vol. 34 (6), pp 12-16,20. Available for MLO (http://www.mlo-online.com)

S10
MEDCEU (1999). Breast Cancer and HER2 [43 paragraphs]. MEDCEU [On-line continuing education]. Available FTP: http://www.medceu.com/course-no-test.cfm?CID=307