Biopsychosocial factors associated with symptom severity in the overlap of non-erosive reflux disease and epigastric pain syndrome: A multicenter cross-sectional study - Mi Lv; Hui Che; Jiayan Hu; Wenxi Yu; Zhaoxia Liu; Xiaolin Zhou; Binduo Zhou; Jinyi Xie; Fengyun Wang (PLoS ONE, 2025)