[Gold standards for scientific proof of efficacy and effectiveness as prerequisites for the dissemination of intervention programs in the field of early intervention. Randomized controlled trials].
Lengning
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Fakultät Rehabilitationswissenschaften, Rehabilitationspsychologie, Technische Universität Dortmund, Emil-Figge-Str. 50, 44221, Dortmund. anke.lengning@tu-dortmund.de