Correction: Preliminary Investigation of Shift, a Novel Smartphone App to Support Junior Doctors' Mental Health and Well-being: Examination of Symptom Progression, Usability, and Acceptability After 1 Month of Use - Samineh Sanatkar; Isabelle Counson; Andrew Mackinnon; Alexandra Bartholomew; Nick Glozier; Samuel Harvey (JMIR Publications, 2023)