These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.
5. Sample size determination for bibliographic retrieval studies. Yao X, Wilczynski NL, Walter SD, Haynes RB. BMC Med Inform Decis Mak; 2008 Sep 29; 8():43. PubMed ID: 18823538 [Abstract] [Full Text] [Related]
6. Is clinical research still too haphazard? Clark O, Clark L, Djulbegovic B. Lancet; 2001 Nov 10; 358(9293):1648. PubMed ID: 11716926 [No Abstract] [Full Text] [Related]
9. Retrieving randomized controlled trials from medline: a comparison of 38 published search filters. McKibbon KA, Wilczynski NL, Haynes RB, Hedges Team. Health Info Libr J; 2009 Sep 10; 26(3):187-202. PubMed ID: 19712211 [Abstract] [Full Text] [Related]