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Vitamin E and Omega-3: What to Believe: Observational Studies or Randomized Controlled Trials?
The practice of conventional medicine has markedly changed since the introduction of the concept of the evidence-based medicine. Randomized controlled study design and large sample size were the only justifications for level A or B evidence at the summit of what is called the evidence pyramid. A lot...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Medknow Publications & Media Pvt Ltd
2012
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3424781/ https://www.ncbi.nlm.nih.gov/pubmed/22919450 http://dx.doi.org/10.4103/1995-705X.99230 |