Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

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.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page


My NCBI Filters

Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
2020 1
2021 3
2022 2
2023 3
2024 0

Text availability

Article attribute

Article type

Publication date

Search Results

7 results

Results by year

Filters applied: . Clear all
Page 1
Prospective randomised controlled trial of adults with perianal fistulising Crohn's disease and optimised therapeutic infliximab levels: PROACTIVE trial study protocol.
Gu B, De Gregorio M, Pipicella JL, Vande Casteele N, Andrews JM, Begun J, Connell W, D'Souza B, Gholamrezaei A, Hart A, Liew D, Radford-Smith G, Rimola J, Sutherland T, Toong C, Woods R, Wu Y, Xuan W, Williams AJ, Ng W, Ding NS, Connor S. Gu B, et al. Among authors: pipicella jl. BMJ Open. 2021 Jul 1;11(7):e043921. doi: 10.1136/bmjopen-2020-043921. BMJ Open. 2021. PMID: 34210720 Free PMC article.