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Cost-effectiveness of tailored print communication, telephone motivational interviewing, and a combination of the two: results of an economic evaluation alongside the Vitalum randomized controlled trial

Hilde M van Keulen*, Judith E Bosmans, Maurits W van Tulder, Johan L Severens, Hein de Vries, Johannes Brug and Ilse Mesters

International Journal of Behavioral Nutrition and Physical Activity 2011, 8:4  doi:10.1186/1479-5868-8-4