Feng, Jia, Qian Sun, Jing Li, and Ting-ting Li. “Reliability and Validity Test of VES-13 and Analysis of influencing factors for the Vulnerable Condition of Patients With Advanced Castration-Resistant Prostate Cancer”. Pakistan Journal of Medical Sciences 37, no. 1 (December 8, 2020). Accessed March 29, 2024. https://pjms.org.pk/index.php/pjms/article/view/3095.