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Clinical Chemistry|September 1, 1994
Artificial neural network predictions of urinary calculus compositions analyzed with infrared spectroscopyM Volmer, B G Wolthers, H J Metting, et al.
Clinica Chimica Acta; International Journal of Clinical Chemistry|June 30, 1983
Diagnosis of cerebrotendinous xanthomatosis (CTX) and effect of chenodeoxycholic acid therapy by analysis of urine using capillary gas chromatographyB G Wolthers, M Volmer, J van der Molen, et al.
European Journal of Clinical Chemistry and Clinical Biochemistry : Journal of the Forum of European Clinical Chemistry Societies|July 1, 1995
Evaluation and clinical application of the Enterotest for the determination of human biliary porphyrin compositionG J Beukeveld, C M Bijleveld, F Kuipers, et al.
The Journal of Steroid Biochemistry and Molecular Biology|May 1, 1993
New identified 15 beta-hydroxylated 21-deoxy-pregnanes in congenital adrenal hyperplasia due to 21-hydroxylase deficiencyG P Kraan, B G Wolthers, J C van der Molen, et al.
Gastroenterology|August 1, 1989
Benign recurrent intrahepatic cholestasis: altered bile acid metabolismC M Bijleveld, R J Vonk, F Kuipers, et al.
Clinica Chimica Acta; International Journal of Clinical Chemistry|September 15, 1984
Capillary gas chromatographic determinations of urinary bile acids and bile alcohols in CTX patients proving the ineffectivity of ursodeoxycholic acid treatmentB J Koopman, B G Wolthers, J C van der Molen, et al.
Biochimica Et Biophysica Acta|October 1, 1986
Increased (23R)-hydroxylase activity in patients suffering from cerebrotendinous xanthomatosis, resulting in (23R)-hydroxylation of bile acidsB J Koopman, B G Wolthers, J C Van der Molen, et al.
Biomedical & Environmental Mass Spectrometry|September 1, 1989
Metabolic dissimilarity between (9,12,12-2H) cortisol and natural cortisol in vivo. Can deuterated cortisol be used for the measurement of the urinary cortisol production rate?G P Kraan, T E Chapman, N M Drayer, et al.
Clinical Endocrinology|October 1, 1993
The determination of delta-5-androstenediol and its sulphate in serum and urine by gas chromatography-mass spectrometryL D Dikkeschei, B G Wolthers, P H Willemse, et al.
Biomedical & Environmental Mass Spectrometry|November 1, 1988
Are (13C)cortisol and (3H)cortisol metabolized identically to natural cortisol in adrenalectomized piglets?T E Chapman, G P Kraan, N M Drayer, et al.
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