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The Nuts and Bolts of Critically Appraising Observational and Randomized Controlled Studies.
Ronald L Koretz
Published in:
Nutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition (2021)
Keyphrases
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double blind
open label
placebo controlled
phase iii
case control
phase ii
clinical trial
cross sectional
randomized controlled trial