6. Limitations of This Study (i) No follow-up data was collected; therefore, the long- term effects of the interventions in the present study remain unknown. (ii) Absence of true control group affects the internal validity of the study.
6. Limitations of This Study (i) No follow-up data was collected; therefore, the long- term effects of the interventions in the present study remain unknown. (ii) Absence of true control group affects the internal validity of the study.