H.J. Nelis, A.P. Deleenheer, G. Merchie, P. Lavens, P. Sorgeloos-1997
Journal of Chromatographic Science, 35 (7) : 337-341 (from Current Contents)
(Lab Med Biochem & Clin Anam, Harelbekestr 72, B-9000 Gent, Belgium)
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