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 J, Bateman B, Becker F, Cresswell T, Flynn D, McNaughton R, Oluboyede Y, Robalino S, Ternent l, Sood BG, Michie S, Shucksmith J, Sniehotta FF, Wigham S
Health technology assessment (Winchester, England). Nov 2015
(DOI : 10.3310/hta19940)