The effect of two lottery-style incentives on response rates to postal questionnaires in a prospective cohort study in preschool children at high risk of asthma: a randomized trial

Por van der Mark, Lonneke B, van Wonderen, Karina E, Mohrs, Jacob, Bindels, Patrick JE, Puhan, Milo A, ter Riet, Gerben
Publicado em 2012

Prediction and treatment of asthma in preschool children at risk: study design and baseline data of a prospective cohort study in general practice (ARCADE)

Por van Wonderen, Karina E, Mark, Lonneke B van der, Mohrs, Jacob, Geskus, Ronald B, Wal, Willem M van der, van Aalderen, Wim MC, Bindels, Patrick JE, ter Riet, Gerben
Publicado em 2009