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S1
Thomas, Clayton L., Editor (1997). Taber’s Cyclopedic Medical Dictionary. F.A. Davis Company, Philadelphia, PA [18th Edition].

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

S3
ACS (2000 July 19). Tumor Markers [63 paragraphs]. American Cancer Society, Prevention and Early Detection [On-line information]. Available online

S4
ACS (1999 July 08). Testing Biopsy and Cytology Specimens for Cancer [71 paragraphs]. American Cancer Society, Prevention and Early Detection [On-line information]. Available online

S5
NCI (1998 April 27). Tumor markers [24 paragraphs]. National Cancer Institute, Cancer Facts [On-line information]. Available FTP: http://cis.nci.nih.gov/fact/5_18.htm

S6
Basquet, C. R. (1995). Cancer and Women [73 paragraphs]. American Medical Women’s Association [On-line excerpt from “The American Women’s Association Women’s Complete Healthbook,” edited by Epps, R. and Stewart, S.]. Available FTP: http://www.amwa-doc.org/publications/WCHealthbook/canceramwa-ch37.html

S7
Check, W. (1998 July) Reaching agreement on tumor markers [39 paragraphs]. CAP Today, In the News [On-line journal]. Available FTP: http://www.cap.org/captoday/archive/1998/julycover.html

S8
Recent Advances (2002 March 11). Gene profiles expose cancer cells’ weak points [24 paragraphs]. Dana-Farber Cancer Institute [On-line journal]. Available FTP: http://www.dana-farber.org/res/research/geneprofiles.asp

S9
ASCO (1996 May 17). Clinical Practice Guidelines for the Use of Tumor Markers in Breast and Colorectal Cancer [21 paragraphs (and a lot more in subpages)]. American Society of Clinical Oncology [On-line guidelines]. Available FTP: http://www.asco.org/prof/pp/html/guide/tumor/m_tumor1.htm

S10
(1999, Last update) Tumor Marker Tests [4 paragraphs]. University of Iowa Health Care, Holden Comprehensive Cancer Center, Virtual Hospital, the apprentice’s assistant [On-line information]. Available FTP: http://www.vh.org/Patients/IHB/Cancer/Tumormarker.html