DOI:
10.1055/s-00028422
Ultrasound International Open
LinksClose Window
References
Howick J, Chalmers I, Glasziou P, Greenhalgh T, Heneghan C, Liberati A, Moschetti I. et al
Explanation of the 2011 Oxford Centre for Evidence-Based Medicine (OCEBM) Levels of Evidence (Background Document).
In.
Oxford: Oxford Centre for Evidence-Based Medicine; 2011
We do not assume any responsibility for the contents of the web pages of other providers.