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.
Gratwohl A, Baldomero H, John L, Tichelli A, Filipowicz A, Nissen C, Speck B.Gratwohl A, et al.Acta Haematol. 1996;95(3-4):176-80. doi: 10.1159/000203874.Acta Haematol. 1996.PMID: 8677739
Gratwohl A, Hermans J, Lyklema A, Zwaan FE.Gratwohl A, et al.Folia Haematol Int Mag Klin Morphol Blutforsch. 1989;116(3-4):353-60.Folia Haematol Int Mag Klin Morphol Blutforsch. 1989.PMID: 2480274
Speck B, Gratwohl A, Nissen C, Osterwalder B, Signer E, Corneo M.Speck B, et al.Schweiz Med Wochenschr. 1983 Jul 23;113(29):1030-4.Schweiz Med Wochenschr. 1983.PMID: 6351242German.
Gratwohl A, Forster I, Speck B.Gratwohl A, et al.Transplantation. 1982 Apr;33(4):361-4. doi: 10.1097/00007890-198204000-00004.Transplantation. 1982.PMID: 7041361