Internet-delivered cognitive behavioural therapy programme to reduce depressive symptoms in patients with multiple sclerosis: a multicentre, randomised, controlled, phase 3 trial oleh Stefan M Gold, ProfPhD, Tim Friede, ProfPhD, Björn Meyer, PhD, Rona Moss-Morris, ProfPhD, Joanna Hudson, PhD, Susanna Asseyer, MD, Judith Bellmann-Strobl, MD, Andreas Leisdon, MSc, Leonie Ißels, MSc, Kristin Ritter, MSc, David Schymainski, MSc, Hayley Pomeroy, BSc, Sharon G Lynch, ProfMD, Julia S Cozart, MA, Joan Thelen, PhD, Cristina A F Román, PhD, Margaret Cadden, PhD, Erin Guty, PhD, Stephanie Lau, MSc, Jana Pöttgen, PhD, Caren Ramien, PhD, Susan Seddiq-Zai, MSc, Anna-Maria Kloidt, MSc, Johannes Wieditz, PhD, Iris-Katharina Penner, ProfPhD, Friedemann Paul, ProfMD, Nancy L Sicotte, ProfMD, Jared M Bruce, ProfPhD, Peter A Arnett, ProfPhD, Christoph Heesen, ProfMD