Limitation
Data were collected by self-report, so there is the possibility of desirability bias. Besides, because of time limitations related to the thesis proposal, we investigated the short-term outcomes of the intervention; a longer follow-up period would reveal its long-term effects. Moreover, due to the nature of the intervention, the patients were aware of their assigned groups and so blinding was impossible. Finally, the study consisted of mainly male participants. Hence, the findings are not generalizable to females.