Abnormal alterations of regional spontaneous neuronal activity and functional connectivity in insomnia patients with difficulty falling asleep: a resting-state fMRI study. - Jiang, Tongfei; Yin, Xuejiao; Zhu, Liying; Jia, Weilin; Tan, Zhongjian; Li, Bin; Guo, Jing (BMC Neurology, 2023)