Scheduled Telephone Support for Internet Cognitive Behavioral Therapy for Depression in Patients at Risk for Dropout: Pragmatic Randomized Controlled Trial

Satu Pihlaja   ^{1 *} , LicPs ;   Jari Lahti   ^{2 *} , PhD ;   Jari Olavi Lipsanen   ^{2 *} , MA ;   Ville Ritola   ^{1 *} , MA ;   Eero-Matti Gummerus   ^{1 *} , MA ;   Jan-Henry Stenberg   ^{1 *} , PhD ;   Grigori Joffe   ^{1 *} , MD, PhD

¹ Department of Psychiatry, University of Helsinki and Helsinki University Hospital, Hospital District of Helsinki and Uusimaa, Helsinki, Finland

² Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland

*all authors contributed equally