Limitations
Rapport was established between the moderator and participants during the intervention treatment period. Although the participants actively identified the problems of the intervention, this situation might generate positive answers from the participants and lead to bias. Second, online interviews were used, and the participants’ portraits were not shown. Although this approach protected the privacy of the participants, it might lead to missing some useful information conveyed via nonverbal ways, such as body language. Third, in general, the participants had high educational levels. Two-thirds of the participants held an undergraduate degree or beyond, and among them, five participants held postgraduate degrees or beyond. This situation might limit the generalization of the study results.