Furukawa, T. ., Horikoshi, M. ., Fujita, H. ., Tsujino, N. ., Jinnin, R. ., Kako, Y. ., … Hasegawa, A. . (2018). Cognitive and Behavioral Skills Exercises Completed by Patients with Major Depression During Smartphone Cognitive Behavioral Therapy: Secondary Analysis of a Randomized Controlled Trial. JMIR Mental Health, 5(1), e4. https://doi.org/10.2196/mental.9092 (Original work published 2018)