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

Raheleh Khorsan1, Cindy Crawford2

  • 1Military Medical Research, Samueli Institute, 2101 East Coast Highway, Suite 300, Corona Del Mar, CA 92625, USA ; Department of Planning, Policy, and Design, School of Social Ecology, University of California Irvine, Irvine, CA 92697-7075, USA.

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