Analysis and comparison of the trends in burden of low back pain in China and worldwide from 1990 to 2021. - Wei, Yongcun; Xie, Yanchun; Xuan, Anwu; Gu, Hongwen; Lian, Yi; Wang, Zening; Wang, Hongwei; Yu, Hailong (Journal of Health, Population & Nutrition, 2025)