Effectiveness and acceptability of parental financial incentives and quasi-mandatory schemes for increasing uptake of vaccinations in preschool children: systematic review, qualitative study and discrete choice experiment.
Adams EJ, Bateman B, Becker F, Cresswell T, McNaughton RJ, Michie S, Oluboyede Y, Robalino S, Shucksmith J, Sniehotta FF, Sood BG, and Wigham S
Health Technology Assessment NIHR Journals Library. Nov 2015
(DOI : 10.3310/hta19940)