Predicting the phenylalanine blood concentration from urine analyses. An approach to noninvasive monitoring of patients with phenylketonuria by Langenbeck, U., Baum, F., Mench‐Hoinowski, A., Luthe, H., Behbehani, A. W.

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Quantitative analysis of β-phenylpyruvic acid by single ion monitoring : Evaluation of isomeric internal standards by Langenbeck, U., Mench-Hoinowski, A., Rød-Urban, I.

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O-trimethylsilylquinoxalinol derivatives of aromatic α-keto acids : Mass spectra and quantitative gas chromatography by Langenbeck, U., Mench-Hoinowski, A., Dieckmann, K.-P., Möhring, H.-U., Petersen, M.

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Absence of a significant renal threshold for two aromatic acids in phenylketonuric children over two years of age by Langenbeck, U, Behbehani, A, Mench-Hoinowski, A, Petersen, M

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Peritoneal dialysis in maple-syrup-urine disease: studies on branched-chain amino and keto acids by Wendel, U, Becker, K, Przyrembel, H, Bulla, M, Manegold, C, Mench-Hoinowski, A, Langenbeck, U

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Blood levels of branched-chain ?-keto acids in uremia: Therapeutic implications by Schauder, P., Matthaei, D., Scheler, F., Mench-Hoinowski, A., Langenbeck, U.

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Quantitative analysis of β-phenylpyruvic acid by single ion monitoring by Langenbeck, U., Mench-Hoinowski, A., Rød-Urban, I.

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O-trimethylsilylquinoxalinol derivatives of aromatic α-keto acids by Langenbeck, U., Mench-Hoinowski, A., Dieckmann, K.-P., Möhring, H.-U., Petersen, M.

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