Corrigendum: The roles of serum vitamin D and tobacco smoke exposure in insomnia: a cross-sectional study of adults in the United States - Gao, Tianci; Hou, Mengxing; Wang, Qianfei; Liu, Dong; Chen, Fenqiao; Xing, Yueyi; Mei, Jianqiang (Frontiers in Nutrition, 2025)