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

by van der Mark Lonneke B, van Wonderen Karina E, Mohrs Jacob, Bindels Patrick JE, Puhan Milo A, ter Riet Gerben
Published 2012-12-01

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

by van Aalderen Wim MC, Wal Willem, Geskus Ronald B, Mohrs Jacob, Mark Lonneke, van Wonderen Karina E, Bindels Patrick JE, ter Riet Gerben
Published 2009-04-01