Results 191 to 200 of about 164,521 (208)
Some of the next articles are maybe not open access.

The Role of a Second Control Group in an Observational Study

Statistical Science, 1987
Paul R Rosenbaum
exaly  

Steroidal contraceptives and bone fractures in women: evidence from observational studies

The Cochrane Library, 2015
Laureen M Lopez   +2 more
exaly  

Alcohol consumption and the prevalence of metabolic syndrome: A meta-analysis of observational studies

Atherosclerosis, 2009
Ala'A Alkerwi   +2 more
exaly  

Randomized Trials or Observational Tribulations?

New England Journal of Medicine, 2000
Stuart J Pocock, Diana R Elbourne
exaly  

Search strategies to identify observational studies in MEDLINE and EMBASE

The Cochrane Library
JOSÉ S Marcano Belisario   +2 more
exaly  

Strengthening the Reporting of Observational Studies in Epidemiology (STROBE): Explanation and elaboration

International Journal of Surgery, 2014
Jan P Vandenbroucke   +2 more
exaly  

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