An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
van der Kooij PJ, Persijn JP, van der Slik W, Korsten CB.van der Kooij PJ, et al. Among authors: persijn jp.Z Klin Chem Klin Biochem. 1975 Apr;13(4):149-55. doi: 10.1515/cclm.1975.13.4.149.Z Klin Chem Klin Biochem. 1975.PMID: 1098294
Engelsman E, Persijn JP, Korsten CB, Cleton FJ.Engelsman E, et al. Among authors: persijn jp.Br Med J. 1973 Jun 30;2(5869):750-2. doi: 10.1136/bmj.2.5869.750.Br Med J. 1973.PMID: 4352316Free PMC article.