Citations for: Faupel-Badger, J. M.; Fuhrman, B. J.; Xu, X.; Falk, R. T.; Keefer, L. K.; Veenstra, T. D.; Hoover, R. N.; Ziegler, R. G. Comparison of Liquid Chromatography-Tandem Mass Spectrometry, RIA, and ELISA Methods for Measurement of Urinary Estrogens. Cancer Epidemiol. Biomarkers Prev. 2010, 19 (1), 292–300.