Moving from intention to behaviour: a randomised controlled trial protocol for an app-based physical activity intervention (i2be).
Lili L KókaiDiarmaid T Ó CeallaighAnne I WijtzesJeanine E Roeters van LennepMartin S HaggerJohn CawleyKirsten I M RohdeHans van KippersluisAlex BurdorfPublished in: BMJ open (2022)
Netherlands trial register, NL9329.