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.
Anderson E, Gaunt D, Metcalfe C, Rai M, Hollingworth W, Mills N, Beasant L, Parslow R, Kessler D, Macleod J, Stallard P, Knoop H, Van de Putte E, Nijhof S, Bleijenberg G, Crawley E.Anderson E, et al. Among authors: nijhof s.Trials. 2019 Dec 19;20(1):750. doi: 10.1186/s13063-019-3895-1.Trials. 2019.PMID: 31856886Free PMC article.
Nijhof LN, van de Putte EM, Wulffraat NM, Nijhof SL.Nijhof LN, et al.Arthritis Care Res (Hoboken). 2016 Jan;68(1):108-14. doi: 10.1002/acr.22710.Arthritis Care Res (Hoboken). 2016.PMID: 26314390Free article.