Ralph I. Horwitz

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Publication Statistics

Publication period start
2000
Publication period end
2000
Number of co-authors
2

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Publications

Concato, John, Shah, Nirav, Horwitz, Ralph I. (2000): Randomized, Controlled Trials, Observational Studies, and the Hierarchy of Research Design. In New England Journal of Medicine, 342 (25) pp. 1887-1892. http://www.nejm.org/doi/full/10.1056/NEJM200006223422507