Adding Mobile Elements to Online Physical Activity Interventions for Adults Aged Over 50 Years: Prototype Development Study.

Eline H G M Collombon Denise Astrid Peels Catherine Adriana Wilhelmina Bolman Gert-Jan de Bruijn Lilian Lechner

Published in: JMIR formative research (2023)

RR2-10.2196/31677.

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