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The Biochemical Journal|February 1, 1974
Chemical and biochemical studies on 18-hydroxyoestroneJ K Findlay, L Siekmann, H Breuer
Journal of Clinical Chemistry and Clinical Biochemistry. Zeitschrift Fur Klinische Chemie Und Klinische Biochemie|March 1, 1983
[Collaborative tests of steroid hormone determinations: accuracy and precision of analytic results]G Röhle, U Voigt, L Siekmann, et al.
Clinical Chemistry and Laboratory Medicine|October 17, 2001
Establishing a reference system in clinical enzymologyM Panteghini, F Ceriotti, G Schumann, et al.
Scandinavian Journal of Clinical and Laboratory Investigation. Supplementum|January 1, 1993
Standardization of hapten immunoprocedures: total cortisolJ P Gosling, J Middle, L Siekmann, et al.
European Journal of Endocrinology|September 2, 1998
Gestodene and desogestrel do not have a different influence on concentration profiles of ethinylestradiol in women taking oral contraceptives--results of isotope dilution mass spectrometry measurementsL Siekmann, A Siekmann, F Bidlingmaier, et al.
Clinical Endocrinology|September 1, 1994
Suramin in adrenocortical cancer: limited efficacy and serious toxicityW Arlt, M Reincke, L Siekmann, et al.
Journal of Clinical Chemistry and Clinical Biochemistry. Zeitschrift Fur Klinische Chemie Und Klinische Biochemie|November 1, 1990
Analyses with the KODAK-Ektachem. Accuracy control using reference method values and the influence of protein concentration. Part II. SubstratesW R Külpmann, P Maibaum, O Sonntag, et al.
Clinical Chemistry|April 1, 1991
Development, validation, and certification by isotope dilution gas chromatography-mass spectrometry of lyophilized human serum reference materials for cortisol (CRM 192 and 193) and progesterone (CRM 347 and 348)L Thienpont, L Siekmann, A Lawson, et al.
Steroids|January 19, 2000
Influence of oral dehydroepiandrosterone (DHEA) on urinary steroid metabolites in males and femalesF Callies, W Arlt, L Siekmann, et al.
The Journal of Allergy and Clinical Immunology|October 9, 2001
Standardized extracts from Chinese herbs induce IL-10 production in human monocyte-derived dendritic cells and alter their differentiation in vitroN Novak, J Haberstok, S Kraft, et al.
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