Increasing the Effectiveness of a Physical Activity Smartphone Intervention With Positive Suggestions: Randomized Controlled Trial.
Aleksandrina SkvortsovaTalia R Cohen RodriguesDavid R de BuisonjéTobias KowatschPrabhakaran SanthanamDieuwke S VeldhuijzenHenriët van MiddendorpAndrea W M EversPublished in: Journal of medical Internet research (2022)
Open Science Framework 10.17605/OSF.IO/CWJES; https://osf.io/cwjes.