Saeidi Z, Asgharnejad AA. The Effectiveness of Positivism Group Psychotherapy Based on Frisch’s Theory in Promoting Happiness and Life Satisfaction of Breast Cancer Patients. ASRJETS-Journal [Internet]. 2018 Oct. 26 [cited 2025 Sep. 22];48(1):53-6. Available from: https://www.asrjetsjournal.org/American_Scientific_Journal/article/view/4445