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Research Instruments, Questionnaires, and Tools 


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Tweetations for "Monitoring Dietary Intake and Physical Activity Electronically: Feasibility, Usability, and Ecological Validity of a Mobile-Based Ecological Momentary Assessment Tool"

Jorinde Eline Spook, Theo Paulussen, Gerjo Kok, Pepijn Van Empelen
J Med Internet Res 2013 (Sep 24); 15(9):e214 

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