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.
Heggen BD, Ramspek CL, van der Bogt KEA, de Haan MW, Hemmelder MH, Hiligsmann MJC, van Loon MM, Rotmans JI, Tordoir JHM, Dekker FW, Schurink GWH, Snoeijs MGJ; OASIS study group.Heggen BD, et al.BMJ Open. 2022 Feb 3;12(2):e053108. doi: 10.1136/bmjopen-2021-053108.BMJ Open. 2022.PMID: 35115352Free PMC article.