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 NCBI Filters

Text availability

Article attribute

Article type

Publication date

Search Results

133 results

Filters applied: . Clear all
Results are displayed in a computed author sort order. The Results By Year timeline is not available.
Page 1
The qualification period.
Knipschild P, Leffers P, Feinstein AR. Knipschild P, et al. J Clin Epidemiol. 1991;44(6):461-4. doi: 10.1016/0895-4356(91)90208-q. J Clin Epidemiol. 1991. PMID: 2037850
Is gallstone disease caused by obesity or by dieting?
Thijs C, Knipschild P, Leffers P. Thijs C, et al. Among authors: knipschild p. Am J Epidemiol. 1992 Feb 1;135(3):274-80. doi: 10.1093/oxfordjournals.aje.a116281. Am J Epidemiol. 1992. PMID: 1546703
Alcohol drinking and gallstone disease.
Thijs C, Leffers P, Knipschild P. Thijs C, et al. Among authors: knipschild p. Epidemiology. 1995 May;6(3):338-9. doi: 10.1097/00001648-199505000-00033. Epidemiology. 1995. PMID: 7619951 No abstract available.
133 results