Ismail, Norzaher, Shamsul Azhar Shah, Syafiq Taib, Siti Nor Mat, and Nazarudin Safian. “Internal Consistency Study of EORTC QLQ-C30 and QLQ-PR25 Questionnaires for Quality of Life Assessment Among Prostate Cancer Patients in a University Hospital , Kuala Lumpur Malaysia”. International Journal of Public Health Research 10, no. 1 (March 26, 2020). Accessed May 5, 2024. https://spaj.ukm.my/ijphr/index.php/ijphr/article/view/260.