AUTHOR=van Aken Bernice C. , Bakia Ayuk , Wierdsma André I. , Voskes Yolande , Van Weeghel Jaap , van Bussel Evelyn M. M. , Hagestein Carla , Ruissen Andrea M. , Leendertse Pien , Sewbalak Wishal V. , van der Draai Daphne A. , Hammink Alice , Mandos M. E. , van der Gaag Mark , Bonebakker Annette E. , Van Der Feltz-Cornelis Christina M. , Mulder Cornelis L. TITLE=Corrigendum: UP'S: A Cohort Study on Recovery in Psychotic Disorder Patients: Design Protocol JOURNAL=Frontiers in Psychiatry VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2021.771914 DOI=10.3389/fpsyt.2021.771914 ISSN=1664-0640