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

259 results

Filters applied: . Clear all
Results are displayed in a computed author sort order. The Publication Date timeline is not available.
Page 1
Challenges in systematic reviews that assess treatment harms.
Chou R, Helfand M. Chou R, et al. Among authors: helfand m. Ann Intern Med. 2005 Jun 21;142(12 Pt 2):1090-9. doi: 10.7326/0003-4819-142-12_part_2-200506211-00009. Ann Intern Med. 2005. PMID: 15968034 Free article. Review.
GRADE guidelines: 3. Rating the quality of evidence.
Balshem H, Helfand M, Schünemann HJ, Oxman AD, Kunz R, Brozek J, Vist GE, Falck-Ytter Y, Meerpohl J, Norris S, Guyatt GH. Balshem H, et al. Among authors: helfand m. J Clin Epidemiol. 2011 Apr;64(4):401-6. doi: 10.1016/j.jclinepi.2010.07.015. Epub 2011 Jan 5. J Clin Epidemiol. 2011. PMID: 21208779
Screening for skin cancer.
Helfand M, Mahon SM, Eden KB, Frame PS, Orleans CT. Helfand M, et al. Am J Prev Med. 2001 Apr;20(3 Suppl):47-58. doi: 10.1016/s0749-3797(01)00258-6. Am J Prev Med. 2001. PMID: 11306232 Review.
259 results