“Psychometric Properties of DASS-21 and Predictive Model of Negative Affectivities in Individuals with Different Pain Conditions”, GJMR, vol. 20, no. K3, pp. 13–25, Apr. 2020, Accessed: Aug. 13, 2026. [Online]. Available: https://medicalresearchjournal.org/index.php/GJMR/article/view/2003