AUTHOR=Ball Elizabeth , Rivas Carol TITLE=Health Apps Require Co-development to Be Acceptable and Effective JOURNAL=Frontiers in Psychology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2021.714453 DOI=10.3389/fpsyg.2021.714453 ISSN=1664-1078