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 den Brand FA, Nagelhout GE, Winkens B, Chavannes NH, van Schayck OCP, Evers SMAA.van den Brand FA, et al. Among authors: van schayck ocp.Addiction. 2020 Mar;115(3):534-545. doi: 10.1111/add.14861. Epub 2019 Dec 17.Addiction. 2020.PMID: 31849138Free PMC article.Clinical Trial.
Chavannes N, Schermer T, Akkermans R, Jacobs JE, van de Graaf G, Bollen R, van Schayck O, Bottema B.Chavannes N, et al.Respir Med. 2004 Nov;98(11):1124-30. doi: 10.1016/j.rmed.2004.04.004.Respir Med. 2004.PMID: 15526814Free article.
Schermer T, Chavannes N, Dekhuijzen R, Wouters E, Muris J, Akkermans R, van Schayck O, van Weel C.Schermer T, et al.Respir Med. 2009 Apr;103(4):542-51. doi: 10.1016/j.rmed.2008.11.003. Epub 2009 Jan 9.Respir Med. 2009.PMID: 19138505Free article.Clinical Trial.