Promoting the return of lapsed blood donors: a seven-arm randomized controlled trial of the question-behavior effect

Health Psychology (2014) - Comment
pubmed: 23957902 doi: 10.1037/a0033505 issn: 1930-7810 issn: 0278-6133

Gaston Godin, Marc Germain, Mark Conner, Gilles Delage, Paschal Sheeran