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Postprint
Consortium of Swiss Academic Libraries

How to assess the external validity of therapeutic trials: a conceptual approach

Dekkers, O M. ; Elm, E von ; Algra, A. ; Romijn, J A. ; Vandenbroucke, J P.

In: International Journal of Epidemiology, 2010, vol. 39, no. 1, p. 89-94

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