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
Text availability
Article attribute
Article type
Publication date

Search Results

6 results
Filters applied: . Clear all Results are displayed in a computed author sort order. Results by year timeline is unavailable
Page 1
Is coffee a colonic stimulant?
Rao SS, Welcher K, Zimmerman B, Stumbo P. Rao SS, et al. Among authors: welcher k. Eur J Gastroenterol Hepatol. 1998 Feb;10(2):113-8. doi: 10.1097/00042737-199802000-00003. Eur J Gastroenterol Hepatol. 1998. PMID: 9581985 Clinical Trial.
FECOM: a new artificial stool for evaluating defecation.
Pelsang RE, Rao SS, Welcher K. Pelsang RE, et al. Among authors: welcher k. Am J Gastroenterol. 1999 Jan;94(1):183-6. doi: 10.1111/j.1572-0241.1999.00793.x. Am J Gastroenterol. 1999. PMID: 9934752 Clinical Trial.