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Carmann H, van Dalen A, van Kampen EJ, Keogh H, Lüdin E, Orjasaeter H, van der Ploeg P, Staab HJ.Carmann H, et al. Among authors: van kampen ej.J Clin Chem Clin Biochem. 1981 Sep;19(9):961-5. doi: 10.1515/cclm.1981.19.9.961.J Clin Chem Clin Biochem. 1981.PMID: 7288375
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