Brinkman, H. R., M. L. Kowalchyk, L. Cahn, C. J. Aaronson, M. Böttche, C. Presseau, J. C. Markowitz, B. T. Litz, L. Huckins, R. Yehuda, C. Knaevelsrud, R. H. Pietrzak, and A. Feder. “Internet-Based Cognitive Behavioral Therapy Versus Internet-Based Modified Present-Centered Therapy for World Trade Center Responders and Survivors With Posttraumatic Stress Disorder: Rationale and Design of a Randomized Controlled Trial”. International Journal of Clinical Trials, vol. 8, no. 3, July 2021, pp. 202-10, doi:10.18203/2349-3259.ijct20212843.