Boelen, Paul A., and Yulia Kolchinska. “Prolonged Grief Disorder: Nature, Risk-Factors, Assessment, and Cognitive-Behavioural Treatment”. Psychosomatic Medicine and General Practice 7, no. 2 (December 28, 2022): e0702375. Accessed June 8, 2026. https://dev-ojs.e-medjournal.com/index.php/psp/article/view/375.