Mehrabi R, Jahanian S. The Effectiveness of Positive Psychotherapy Techniques Training on Tolerance of Ambiguity and Quality of Life in Mothers of Children with Leukemia. MHLJ [Internet]. 2025 Sep. 1 [cited 2025 Oct. 3];:1-12. Available from: https://www.mhljournal.com/index.php/mhlj/article/view/102