Results 261 to 267 of about 4,658,408 (267)
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American Cancer Society Lung Cancer Screening Guidelines

Ca-A Cancer Journal for Clinicians, 2013
Ya-Chen Tina Shih   +2 more
exaly  

Cancer Therapy and the Randomized Clinical Trial: Good Medicine?

Ca-A Cancer Journal for Clinicians, 1994
exaly  

Randomized, Controlled Trials, Observational Studies, and the Hierarchy of Research Designs

New England Journal of Medicine, 2000
Ralph I Horwitz   +2 more
exaly  

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