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Larry K. Keefer
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Journal Articles

Assay Reproducibility and Interindividual Variation for 15 Serum Estrogens and Estrogen Metabolites Measured by Liquid Chromatography–Tandem Mass Spectrometry

Barbara J. Fuhrman, Xia Xu, Roni T. Falk, Cher M. Dallal, Timothy D. Veenstra, Larry K. Keefer, Barry I. Graubard, Louise A. Brinton, Regina G. Ziegler, Gretchen L. Gierach
Journal: Cancer Epidemiology, Biomarkers & Prevention
Cancer Epidemiol Biomarkers Prev (2014) 23 (12): 2649–2657.
https://doi.org/10.1158/1055-9965.EPI-14-0438
Published: 02 December 2014
View articletitled, Assay Reproducibility and Interindividual Variation for 15 Serum Estrogens and Estrogen Metabolites Measured by Liquid Chromatography–Tandem Mass Spectrometry
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Journal Articles

Comparison of Liquid Chromatography-Tandem Mass Spectrometry, RIA, and ELISA Methods for Measurement of Urinary Estrogens

Jessica M. Faupel-Badger, Barbara J. Fuhrman, Xia Xu, Roni T. Falk, Larry K. Keefer, Timothy D. Veenstra, Robert N. Hoover, Regina G. Ziegler
Journal: Cancer Epidemiology, Biomarkers & Prevention
Cancer Epidemiol Biomarkers Prev (2010) 19 (1): 292–300.
https://doi.org/10.1158/1055-9965.EPI-09-0643
Published: 06 January 2010
View articletitled, Comparison of Liquid Chromatography-Tandem Mass Spectrometry, RIA, and ELISA Methods for Measurement of Urinary Estrogens
Open the PDF for Comparison of Liquid Chromatography-Tandem Mass Spectrometry, RIA, and ELISA Methods for Measurement of Urinary Estrogens in another window
Journal Articles

Soy Intake is Associated with Increased 2-Hydroxylation and Decreased 16α-Hydroxylation of Estrogens in Asian-American Women

Barbara J. Fuhrman, Ruth Pfeiffer, Xia Xu, Anna H. Wu, Larissa Korde, Mitchell H. Gail, Larry K. Keefer, Timothy D. Veenstra, Robert N. Hoover, Regina G. Ziegler
Journal: Cancer Epidemiology, Biomarkers & Prevention
Cancer Epidemiol Biomarkers Prev (2009) 18 (10): 2751–2760.
https://doi.org/10.1158/1055-9965.EPI-09-0388
Published: 08 October 2009
View articletitled, Soy Intake is Associated with Increased 2-Hydroxylation and Decreased 16α-Hydroxylation of Estrogens in Asian-American Women
Open the PDF for Soy Intake is Associated with Increased 2-Hydroxylation and Decreased 16α-Hydroxylation of Estrogens in Asian-American Women in another window