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.

Https

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

Filters

My Custom Filters

Publication date

Text availability

Article attribute

Article type

Additional filters

Article Language

Species

Sex

Age

Other

Search Results

392 results

Filters applied: . Clear all
Results are displayed in a computed author sort order. The Publication Date timeline is not available.
Page 1
Relation of sputum colour to bacterial load in acute exacerbations of COPD.
Brusse-Keizer MG, Grotenhuis AJ, Kerstjens HA, Telgen MC, van der Palen J, Hendrix MG, van der Valk PD. Brusse-Keizer MG, et al. Among authors: van der valk pd, van der palen j. Respir Med. 2009 Apr;103(4):601-6. doi: 10.1016/j.rmed.2008.10.012. Epub 2008 Nov 22. Respir Med. 2009. PMID: 19027281 Free article.
A randomised cross-over trial investigating the ease of use and preference of two dry powder inhalers in patients with asthma or chronic obstructive pulmonary disease.
van der Palen J, van der Valk P, Goosens M, Groothuis-Oudshoorn K, Brusse-Keizer M. van der Palen J, et al. Among authors: van der valk p. Expert Opin Drug Deliv. 2013 Sep;10(9):1171-8. doi: 10.1517/17425247.2013.817387. Epub 2013 Jul 2. Expert Opin Drug Deliv. 2013. PMID: 23815552 Clinical Trial.
392 results