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.
Mulder NH, Sleijfer DT, de Vries EG, Schraffordt Koops H, Willemse PH.Mulder NH, et al. Among authors: schraffordt koops h.J Cancer Res Clin Oncol. 1990;116(3):301-2. doi: 10.1007/BF01612907.J Cancer Res Clin Oncol. 1990.PMID: 2196265
Mulder NH, Sleijfer DT, de Vries EG, Schraffordt Koops H, Samson MJ, Willemse PH.Mulder NH, et al. Among authors: schraffordt koops h.J Cancer Res Clin Oncol. 1989;115(1):93-5. doi: 10.1007/BF00391607.J Cancer Res Clin Oncol. 1989.PMID: 2466036