Effects of non-surgical interventions on standing posture and pain in children with flexible flatfoot: a network meta-analysis of randomized controlled trials. - Lin, Liang-Yu; Lin, Ai-Chieh; Lai, Pei-Chun; Fang, Ching-Ju; Tu, Yu-Kang; Huang, Ming-Tung; Wu, Po-Ting; Su, Wei-Ren; Hong, Chih-Kai; Kuan, Fa-Chuan (PTJ: Physical Therapy & Rehabilitation Journal, 2026)