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

399 results
Filters applied: . Clear all Results are displayed in a computed author sort order. Results by year timeline is unavailable
Page 1
Use of "2-dose" regimen of methotrexate to treat ectopic pregnancy.
Barnhart K, Hummel AC, Sammel MD, Menon S, Jain J, Chakhtoura N. Barnhart K, et al. Fertil Steril. 2007 Feb;87(2):250-6. doi: 10.1016/j.fertnstert.2006.06.054. Epub 2006 Nov 13. Fertil Steril. 2007. PMID: 17097649 Free article. Clinical Trial.
A clinician's guide to the premenstrual syndrome.
Barnhart KT, Freeman EW, Sondheimer SJ. Barnhart KT, et al. Med Clin North Am. 1995 Nov;79(6):1457-72. doi: 10.1016/s0025-7125(16)30011-6. Med Clin North Am. 1995. PMID: 7475500 Free article. Review.
Emergency contraception.
Barnhart KT, Sondheimer SJ. Barnhart KT, et al. Curr Opin Obstet Gynecol. 1994 Dec;6(6):559-63. Curr Opin Obstet Gynecol. 1994. PMID: 7893964
399 results